@csstools/color-helpers
Version:
Color helpers to ease transformation between formats, gamut, etc
262 lines (261 loc) • 34.4 kB
JavaScript
function multiplyMatrices(_,t){return[_[0]*t[0]+_[1]*t[1]+_[2]*t[2],_[3]*t[0]+_[4]*t[1]+_[5]*t[2],_[6]*t[0]+_[7]*t[1]+_[8]*t[2]]}const _=[.955473421488075,-.02309845494876471,.06325924320057072,-.0283697093338637,1.0099953980813041,.021041441191917323,.012314014864481998,-.020507649298898964,1.330365926242124];
/**
* Bradford chromatic adaptation from D50 to D65
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function D50_to_D65(t){return multiplyMatrices(_,t)}const t=[1.0479297925449969,.022946870601609652,-.05019226628920524,.02962780877005599,.9904344267538799,-.017073799063418826,-.009243040646204504,.015055191490298152,.7518742814281371];
/**
* Bradford chromatic adaptation from D65 to D50
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see http://www.brucelindbloom.com/index.html?Eqn_ChromAdapt.html
*/function D65_to_D50(_){return multiplyMatrices(t,_)}
/**
* @param {number} hue - Hue as degrees 0..360
* @param {number} sat - Saturation as percentage 0..100
* @param {number} light - Lightness as percentage 0..100
* @return {number[]} Array of sRGB components; in-gamut colors in range [0..1]
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/hslToRgb.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/hslToRgb.js
*/function HSL_to_sRGB(_){let t=_[0]%360;const n=_[1]/100,o=_[2]/100;return t<0&&(t+=360),[HSL_to_sRGB_channel(0,t,n,o),HSL_to_sRGB_channel(8,t,n,o),HSL_to_sRGB_channel(4,t,n,o)]}function HSL_to_sRGB_channel(_,t,n,o){const e=(_+t/30)%12;return o-n*Math.min(o,1-o)*Math.max(-1,Math.min(e-3,9-e,1))}
/**
* @param {number} hue - Hue as degrees 0..360
* @param {number} white - Whiteness as percentage 0..100
* @param {number} black - Blackness as percentage 0..100
* @return {number[]} Array of RGB components 0..1
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/hwbToRgb.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/hwbToRgb.js
*/function HWB_to_sRGB(_){const t=_[0],n=_[1]/100,o=_[2]/100;if(n+o>=1){const _=n/(n+o);return[_,_,_]}const e=HSL_to_sRGB([t,100,50]),r=1-n-o;return[e[0]*r+n,e[1]*r+n,e[2]*r+n]}
/**
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function LCH_to_Lab(_){const t=_[2]*Math.PI/180;return[_[0],_[1]*Math.cos(t),_[1]*Math.sin(t)]}
/**
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function Lab_to_LCH(_){const t=Math.sqrt(Math.pow(_[1],2)+Math.pow(_[2],2));let n=180*Math.atan2(_[2],_[1])/Math.PI;return n<0&&(n+=360),t<=.0015&&(n=NaN),[_[0],t,n]}const n=[.3457/.3585,1,.2958/.3585];
/**
* Convert Lab to D50-adapted XYZ
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
*/function Lab_to_XYZ(_){const t=24389/27,o=216/24389,e=(_[0]+16)/116,r=_[1]/500+e,a=e-_[2]/200;return[(Math.pow(r,3)>o?Math.pow(r,3):(116*r-16)/t)*n[0],(_[0]>8?Math.pow((_[0]+16)/116,3):_[0]/t)*n[1],(Math.pow(a,3)>o?Math.pow(a,3):(116*a-16)/t)*n[2]]}
/**
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js
*/function OKLCH_to_OKLab(_){const t=_[2]*Math.PI/180;return[_[0],_[1]*Math.cos(t),_[1]*Math.sin(t)]}
/**
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js
*/function OKLab_to_OKLCH(_){const t=Math.sqrt(_[1]**2+_[2]**2);let n=180*Math.atan2(_[2],_[1])/Math.PI;return n<0&&(n+=360),t<=4e-6&&(n=NaN),[_[0],t,n]}const o=[1.2268798758459243,-.5578149944602171,.2813910456659647,-.0405757452148008,1.112286803280317,-.0717110580655164,-.0763729366746601,-.4214933324022432,1.5869240198367816],e=[1,.3963377773761749,.2158037573099136,1,-.1055613458156586,-.0638541728258133,1,-.0894841775298119,-1.2914855480194092];
/**
* Given OKLab, convert to XYZ relative to D65
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js
*/
function OKLab_to_XYZ(_){const t=multiplyMatrices(e,_);return multiplyMatrices(o,[t[0]**3,t[1]**3,t[2]**3])}
/**
* Assuming XYZ is relative to D50, convert to CIE Lab
* from CIE standard, which now defines these as a rational fraction
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function XYZ_to_Lab(_){const t=compute_f(_[0]/n[0]),o=compute_f(_[1]/n[1]);return[116*o-16,500*(t-o),200*(o-compute_f(_[2]/n[2]))]}const r=216/24389,a=24389/27;function compute_f(_){return _>r?Math.cbrt(_):(a*_+16)/116}const i=[.819022437996703,.3619062600528904,-.1288737815209879,.0329836539323885,.9292868615863434,.0361446663506424,.0481771893596242,.2642395317527308,.6335478284694309],l=[.210454268309314,.7936177747023054,-.0040720430116193,1.9779985324311684,-2.42859224204858,.450593709617411,.0259040424655478,.7827717124575296,-.8086757549230774];
/**
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*
* XYZ <-> LMS matrices recalculated for consistent reference white
* @see https://github.com/w3c/csswg-drafts/issues/6642#issuecomment-943521484
*/
function XYZ_to_OKLab(_){const t=multiplyMatrices(i,_);return multiplyMatrices(l,[Math.cbrt(t[0]),Math.cbrt(t[1]),Math.cbrt(t[2])])}const u=[30757411/17917100,-6372589/17917100,-4539589/17917100,-.666684351832489,1.616481236634939,467509/29648200,792561/44930125,-1921689/44930125,.942103121235474];
/**
* Convert XYZ to linear-light rec2020
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function XYZ_to_lin_2020(_){return multiplyMatrices(u,_)}const c=[446124/178915,-333277/357830,-72051/178915,-14852/17905,63121/35810,423/17905,11844/330415,-50337/660830,316169/330415];
/**
* Convert XYZ to linear-light P3
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function XYZ_to_lin_P3(_){return multiplyMatrices(c,_)}const s=[1.3457868816471583,-.25557208737979464,-.05110186497554526,-.5446307051249019,1.5082477428451468,.02052744743642139,0,0,1.2119675456389452];
/**
* Convert D50 XYZ to linear-light prophoto-rgb
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
*/function XYZ_to_lin_ProPhoto(_){return multiplyMatrices(s,_)}const X=[1829569/896150,-506331/896150,-308931/896150,-851781/878810,1648619/878810,36519/878810,16779/1248040,-147721/1248040,1266979/1248040];
/**
* Convert XYZ to linear-light a98-rgb
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function XYZ_to_lin_a98rgb(_){return multiplyMatrices(X,_)}const Y=[12831/3959,-329/214,-1974/3959,-851781/878810,1648619/878810,36519/878810,705/12673,-2585/12673,705/667];
/**
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function XYZ_to_lin_sRGB(_){return multiplyMatrices(Y,_)}
/**
* Convert an array of linear-light rec2020 RGB in the range 0.0-1.0
* to gamma corrected form ITU-R BT.2020-2 p.4
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function gam_2020(_){return[gam_2020_channel(_[0]),gam_2020_channel(_[1]),gam_2020_channel(_[2])]}function gam_2020_channel(_){const t=_<0?-1:1,n=Math.abs(_);return t*Math.pow(n,1/2.4)}
/**
* Convert an array of linear-light sRGB values in the range 0.0-1.0 to gamma corrected form
* Extended transfer function:
* For negative values, linear portion extends on reflection
* of axis, then uses reflected pow below that
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://en.wikipedia.org/wiki/SRGB
*/function gam_sRGB(_){return[gam_sRGB_channel(_[0]),gam_sRGB_channel(_[1]),gam_sRGB_channel(_[2])]}function gam_sRGB_channel(_){const t=_<0?-1:1,n=Math.abs(_);return n>.0031308?t*(1.055*Math.pow(n,1/2.4)-.055):12.92*_}
/**
* Convert an array of linear-light display-p3 RGB in the range 0.0-1.0
* to gamma corrected form
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function gam_P3(_){return gam_sRGB(_)}
/**
* Convert an array of linear-light prophoto-rgb in the range 0.0-1.0
* to gamma corrected form.
* Transfer curve is gamma 1.8 with a small linear portion.
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function gam_ProPhoto(_){return[gam_ProPhoto_channel(_[0]),gam_ProPhoto_channel(_[1]),gam_ProPhoto_channel(_[2])]}const Z=1/512;function gam_ProPhoto_channel(_){const t=_<0?-1:1,n=Math.abs(_);return n>=Z?t*Math.pow(n,1/1.8):16*_}
/**
* Convert an array of linear-light a98-rgb in the range 0.0-1.0
* to gamma corrected form. Negative values are also now accepted
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function gam_a98rgb(_){return[gam_a98rgb_channel(_[0]),gam_a98rgb_channel(_[1]),gam_a98rgb_channel(_[2])]}function gam_a98rgb_channel(_){const t=_<0?-1:1,n=Math.abs(_);return t*Math.pow(n,256/563)}
/**
* Convert an array of rec2020 RGB values in the range 0.0 - 1.0
* to linear light (un-companded) form.
* ITU-R BT.2020-2 p.4
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function lin_2020(_){return[lin_2020_channel(_[0]),lin_2020_channel(_[1]),lin_2020_channel(_[2])]}function lin_2020_channel(_){const t=_<0?-1:1,n=Math.abs(_);return t*Math.pow(n,2.4)}const D=[63426534/99577255,20160776/139408157,47086771/278816314,26158966/99577255,.677998071518871,8267143/139408157,0,19567812/697040785,1.0609850577107909];
/**
* Convert an array of linear-light rec2020 values to CIE XYZ
* using D65 (no chromatic adaptation)
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
*/function lin_2020_to_XYZ(_){return multiplyMatrices(D,_)}
/**
* Convert an array of of sRGB values where in-gamut values are in the range
* [0 - 1] to linear light (un-companded) form.
* Extended transfer function:
* For negative values, linear portion is extended on reflection of axis,
* then reflected power function is used.
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://en.wikipedia.org/wiki/SRGB
*/function lin_sRGB(_){return[lin_sRGB_channel(_[0]),lin_sRGB_channel(_[1]),lin_sRGB_channel(_[2])]}function lin_sRGB_channel(_){const t=_<0?-1:1,n=Math.abs(_);return n<=.04045?_/12.92:t*Math.pow((n+.055)/1.055,2.4)}
/**
* Convert an array of display-p3 RGB values in the range 0.0 - 1.0
* to linear light (un-companded) form.
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function lin_P3(_){return lin_sRGB(_)}const h=[608311/1250200,189793/714400,198249/1000160,35783/156275,247089/357200,198249/2500400,0,32229/714400,5220557/5000800];
/**
* Convert an array of linear-light display-p3 values to CIE XYZ
* using D65 (no chromatic adaptation)
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
*/function lin_P3_to_XYZ(_){return multiplyMatrices(h,_)}
/**
* Convert an array of prophoto-rgb values where in-gamut Colors are in the
* range [0.0 - 1.0] to linear light (un-companded) form. Transfer curve is
* gamma 1.8 with a small linear portion. Extended transfer function
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function lin_ProPhoto(_){return[lin_ProPhoto_channel(_[0]),lin_ProPhoto_channel(_[1]),lin_ProPhoto_channel(_[2])]}const f=16/512;function lin_ProPhoto_channel(_){const t=_<0?-1:1,n=Math.abs(_);return n<=f?_/16:t*Math.pow(n,1.8)}const m=[.7977666449006423,.13518129740053308,.0313477341283922,.2880748288194013,.711835234241873,8993693872564e-17,0,0,.8251046025104602];
/**
* Convert an array of linear-light prophoto-rgb values to CIE D50 XYZ.
* Matrix cannot be expressed in rational form, but is calculated to 64 bit accuracy.
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see see https://github.com/w3c/csswg-drafts/issues/7675
*/function lin_ProPhoto_to_XYZ(_){return multiplyMatrices(m,_)}
/**
* Convert an array of a98-rgb values in the range 0.0 - 1.0
* to linear light (un-companded) form. Negative values are also now accepted
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function lin_a98rgb(_){return[lin_a98rgb_channel(_[0]),lin_a98rgb_channel(_[1]),lin_a98rgb_channel(_[2])]}function lin_a98rgb_channel(_){const t=_<0?-1:1,n=Math.abs(_);return t*Math.pow(n,563/256)}const b=[573536/994567,263643/1420810,187206/994567,591459/1989134,6239551/9945670,374412/4972835,53769/1989134,351524/4972835,4929758/4972835];
/**
* Convert an array of linear-light a98-rgb values to CIE XYZ
* http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
* has greater numerical precision than section 4.3.5.3 of
* https://www.adobe.com/digitalimag/pdfs/AdobeRGB1998.pdf
* but the values below were calculated from first principles
* from the chromaticity coordinates of R G B W
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
* @see https://www.adobe.com/digitalimag/pdfs/AdobeRGB1998.pdf
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/matrixmaker.html
*/function lin_a98rgb_to_XYZ(_){return multiplyMatrices(b,_)}const g=[506752/1228815,87881/245763,12673/70218,87098/409605,175762/245763,12673/175545,7918/409605,87881/737289,1001167/1053270];
/**
* Convert an array of linear-light sRGB values to CIE XYZ
* using sRGB's own white, D65 (no chromatic adaptation)
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/conversions.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*/function lin_sRGB_to_XYZ(_){return multiplyMatrices(g,_)}
/**
* Convert an array of gamma-corrected sRGB values in the 0.0 to 1.0 range to HSL.
*
* @param {Color} RGB [r, g, b]
* - Red component 0..1
* - Green component 0..1
* - Blue component 0..1
* @return {number[]} Array of HSL values: Hue as degrees 0..360, Saturation and Lightness as percentages 0..100
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/utilities.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
*
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/better-rgbToHsl.js
*/function sRGB_to_HSL(_){const t=_[0],n=_[1],o=_[2],e=Math.max(t,n,o),r=Math.min(t,n,o),a=(r+e)/2,i=e-r;let l=Number.NaN,u=0;if(0!==Math.round(1e5*i)){const _=Math.round(1e5*a);switch(u=0===_||1e5===_?0:(e-a)/Math.min(a,1-a),e){case t:l=(n-o)/i+(n<o?6:0);break;case n:l=(o-t)/i+2;break;case o:l=(t-n)/i+4}l*=60}u<0&&(l+=180,u=Math.abs(u)),l>=360&&(l-=360);return u<=1e-5&&(l=NaN),[l,100*u,100*a]}function sRGB_to_Hue(_){const t=_[0],n=_[1],o=_[2],e=Math.max(t,n,o),r=Math.min(t,n,o);let a=Number.NaN;const i=e-r;if(0!==i){switch(e){case t:a=(n-o)/i+(n<o?6:0);break;case n:a=(o-t)/i+2;break;case o:a=(t-n)/i+4}a*=60}return a>=360&&(a-=360),a}function sRGB_to_XYZ_D50(_){let t=_;return t=lin_sRGB(t),t=lin_sRGB_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_sRGB(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_lin_sRGB(t),t=gam_sRGB(t),t}function HSL_to_XYZ_D50(_){let t=_;return t=HSL_to_sRGB(t),t=lin_sRGB(t),t=lin_sRGB_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_HSL(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_lin_sRGB(t),t=gam_sRGB(t),t=sRGB_to_HSL(t),t}function HWB_to_XYZ_D50(_){let t=_;return t=HWB_to_sRGB(t),t=lin_sRGB(t),t=lin_sRGB_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_HWB(_){let t=_;t=D50_to_D65(t),t=XYZ_to_lin_sRGB(t);const n=gam_sRGB(t),o=Math.min(n[0],n[1],n[2]),e=1-Math.max(n[0],n[1],n[2]);let r=sRGB_to_Hue(n);return o+e>=.99999&&(r=NaN),[r,100*o,100*e]}function Lab_to_XYZ_D50(_){let t=_;return t=Lab_to_XYZ(t),t}function XYZ_D50_to_Lab(_){let t=_;return t=XYZ_to_Lab(t),t}function LCH_to_XYZ_D50(_){let t=_;return t=LCH_to_Lab(t),t=Lab_to_XYZ(t),t}function XYZ_D50_to_LCH(_){let t=_;return t=XYZ_to_Lab(t),t=Lab_to_LCH(t),t}function OKLab_to_XYZ_D50(_){let t=_;return t=OKLab_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_OKLab(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_OKLab(t),t}function OKLCH_to_XYZ_D50(_){let t=_;return t=OKLCH_to_OKLab(t),t=OKLab_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_OKLCH(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_OKLab(t),t=OKLab_to_OKLCH(t),t}function lin_sRGB_to_XYZ_D50(_){let t=_;return t=lin_sRGB_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_lin_sRGB(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_lin_sRGB(t),t}function a98_RGB_to_XYZ_D50(_){let t=_;return t=lin_a98rgb(t),t=lin_a98rgb_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_a98_RGB(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_lin_a98rgb(t),t=gam_a98rgb(t),t}function P3_to_XYZ_D50(_){let t=_;return t=lin_P3(t),t=lin_P3_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_P3(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_lin_P3(t),t=gam_P3(t),t}function lin_P3_to_XYZ_D50(_){let t=_;return t=lin_P3_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_lin_P3(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_lin_P3(t),t}function rec_2020_to_XYZ_D50(_){let t=_;return t=lin_2020(t),t=lin_2020_to_XYZ(t),t=D65_to_D50(t),t}function XYZ_D50_to_rec_2020(_){let t=_;return t=D50_to_D65(t),t=XYZ_to_lin_2020(t),t=gam_2020(t),t}function ProPhoto_RGB_to_XYZ_D50(_){let t=_;return t=lin_ProPhoto(t),t=lin_ProPhoto_to_XYZ(t),t}function XYZ_D50_to_ProPhoto(_){let t=_;return t=XYZ_to_lin_ProPhoto(t),t=gam_ProPhoto(t),t}function XYZ_D65_to_XYZ_D50(_){let t=_;return t=D65_to_D50(t),t}function XYZ_D50_to_XYZ_D65(_){let t=_;return t=D50_to_D65(t),t}function XYZ_D50_to_XYZ_D50(_){return _}function XYZ_D65_to_XYZ_D65(_){return _}function sRGB_to_XYZ_D65(_){let t=_;return t=lin_sRGB(t),t=lin_sRGB_to_XYZ(t),t}function XYZ_D65_to_sRGB(_){let t=_;return t=XYZ_to_lin_sRGB(t),t=gam_sRGB(t),t}function HSL_to_XYZ_D65(_){let t=_;return t=HSL_to_sRGB(t),t=lin_sRGB(t),t=lin_sRGB_to_XYZ(t),t}function XYZ_D65_to_HSL(_){let t=_;return t=XYZ_to_lin_sRGB(t),t=gam_sRGB(t),t=sRGB_to_HSL(t),t}function HWB_to_XYZ_D65(_){let t=_;return t=HWB_to_sRGB(t),t=lin_sRGB(t),t=lin_sRGB_to_XYZ(t),t}function XYZ_D65_to_HWB(_){let t=_;t=XYZ_to_lin_sRGB(t);const n=gam_sRGB(t),o=Math.min(n[0],n[1],n[2]),e=1-Math.max(n[0],n[1],n[2]);let r=sRGB_to_Hue(n);return o+e>=.99999&&(r=NaN),[r,100*o,100*e]}function Lab_to_XYZ_D65(_){let t=_;return t=Lab_to_XYZ(t),t=D50_to_D65(t),t}function XYZ_D65_to_Lab(_){let t=_;return t=D65_to_D50(t),t=XYZ_to_Lab(t),t}function LCH_to_XYZ_D65(_){let t=_;return t=LCH_to_Lab(t),t=Lab_to_XYZ(t),t=D50_to_D65(t),t}function XYZ_D65_to_LCH(_){let t=_;return t=D65_to_D50(t),t=XYZ_to_Lab(t),t=Lab_to_LCH(t),t}function OKLab_to_XYZ_D65(_){let t=_;return t=OKLab_to_XYZ(t),t}function XYZ_D65_to_OKLab(_){let t=_;return t=XYZ_to_OKLab(t),t}function OKLCH_to_XYZ_D65(_){let t=_;return t=OKLCH_to_OKLab(t),t=OKLab_to_XYZ(t),t}function XYZ_D65_to_OKLCH(_){let t=_;return t=XYZ_to_OKLab(t),t=OKLab_to_OKLCH(t),t}function lin_sRGB_to_XYZ_D65(_){let t=_;return t=lin_sRGB_to_XYZ(t),t}function XYZ_D65_to_lin_sRGB(_){let t=_;return t=XYZ_to_lin_sRGB(t),t}function a98_RGB_to_XYZ_D65(_){let t=_;return t=lin_a98rgb(t),t=lin_a98rgb_to_XYZ(t),t}function XYZ_D65_to_a98_RGB(_){let t=_;return t=XYZ_to_lin_a98rgb(t),t=gam_a98rgb(t),t}function P3_to_XYZ_D65(_){let t=_;return t=lin_P3(t),t=lin_P3_to_XYZ(t),t}function XYZ_D65_to_P3(_){let t=_;return t=XYZ_to_lin_P3(t),t=gam_P3(t),t}function lin_P3_to_XYZ_D65(_){let t=_;return t=lin_P3_to_XYZ(t),t}function XYZ_D65_to_lin_P3(_){let t=_;return t=XYZ_to_lin_P3(t),t}function rec_2020_to_XYZ_D65(_){let t=_;return t=lin_2020(t),t=lin_2020_to_XYZ(t),t}function XYZ_D65_to_rec_2020(_){let t=_;return t=XYZ_to_lin_2020(t),t=gam_2020(t),t}function ProPhoto_RGB_to_XYZ_D65(_){let t=_;return t=lin_ProPhoto(t),t=lin_ProPhoto_to_XYZ(t),t=D50_to_D65(t),t}function XYZ_D65_to_ProPhoto(_){let t=_;return t=D65_to_D50(t),t=XYZ_to_lin_ProPhoto(t),t=gam_ProPhoto(t),t}function inGamut(_){return _[0]>=-1e-4&&_[0]<=1.0001&&_[1]>=-1e-4&&_[1]<=1.0001&&_[2]>=-1e-4&&_[2]<=1.0001}function clip(_){return[_[0]<0?0:_[0]>1?1:_[0],_[1]<0?0:_[1]>1?1:_[1],_[2]<0?0:_[2]>1?1:_[2]]}
/**
* @description Calculate deltaE OK which is the simple root sum of squares
* @param {number[]} reference - Array of OKLab values: L as 0..1, a and b as -1..1
* @param {number[]} sample - Array of OKLab values: L as 0..1, a and b as -1..1
* @return {number} How different a color sample is from reference
*
* @license W3C https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
* @copyright This software or document includes material copied from or derived from https://github.com/w3c/csswg-drafts/blob/main/css-color-4/deltaEOK.js. Copyright © 2022 W3C® (MIT, ERCIM, Keio, Beihang).
* @see https://github.com/w3c/csswg-drafts/blob/main/css-color-4/deltaEOK.js
*/function deltaEOK(_,t){const[n,o,e]=_,[r,a,i]=t,l=n-r,u=o-a,c=e-i;return Math.sqrt(l**2+u**2+c**2)}const L=.02,B=1e-4;function mapGamut(_,t,n){const o=_;let e=clip(t(o)),r=deltaEOK(OKLCH_to_OKLab(n(e)),OKLCH_to_OKLab(o));if(r<L)return e;let a=0,i=o[1],l=!0;for(;i-a>B;){const _=(a+i)/2;if(o[1]=_,l&&inGamut(t(o)))a=_;else if(e=clip(t(o)),r=deltaEOK(OKLCH_to_OKLab(n(e)),OKLCH_to_OKLab(o)),r<L){if(L-r<B)return e;l=!1,a=_}else i=_}return clip(t([...o]))}
/**
* @license MIT https://github.com/facelessuser/coloraide/blob/main/LICENSE.md
*/function mapGamutRayTrace(_,t,n){const o=_[0],e=_[2];let r=t(_);const a=t([o,0,e]);for(let _=0;_<4;_++){if(_>0){const _=n(r);_[0]=o,_[2]=e,r=t(_)}const i=rayTraceBox(a,r);if(!i)break;r=i}return clip(r)}function rayTraceBox(_,t){let n=1/0,o=-1/0;const e=[0,0,0];for(let r=0;r<3;r++){const a=_[r],i=t[r]-a;e[r]=i;const l=0,u=1;if(Math.abs(i)>1e-15){const _=1/i,t=(l-a)*_,e=(u-a)*_;o=Math.max(Math.min(t,e),o),n=Math.min(Math.max(t,e),n)}else if(a<l||a>u)return!1}return!(o>n||n<0)&&(o<0&&(o=n),!!isFinite(o)&&[_[0]+e[0]*o,_[1]+e[1]*o,_[2]+e[2]*o])}const G={aliceblue:[240,248,255],antiquewhite:[250,235,215],aqua:[0,255,255],aquamarine:[127,255,212],azure:[240,255,255],beige:[245,245,220],bisque:[255,228,196],black:[0,0,0],blanchedalmond:[255,235,205],blue:[0,0,255],blueviolet:[138,43,226],brown:[165,42,42],burlywood:[222,184,135],cadetblue:[95,158,160],chartreuse:[127,255,0],chocolate:[210,105,30],coral:[255,127,80],cornflowerblue:[100,149,237],cornsilk:[255,248,220],crimson:[220,20,60],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgoldenrod:[184,134,11],darkgray:[169,169,169],darkgreen:[0,100,0],darkgrey:[169,169,169],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkseagreen:[143,188,143],darkslateblue:[72,61,139],darkslategray:[47,79,79],darkslategrey:[47,79,79],darkturquoise:[0,206,209],darkviolet:[148,0,211],deeppink:[255,20,147],deepskyblue:[0,191,255],dimgray:[105,105,105],dimgrey:[105,105,105],dodgerblue:[30,144,255],firebrick:[178,34,34],floralwhite:[255,250,240],forestgreen:[34,139,34],fuchsia:[255,0,255],gainsboro:[220,220,220],ghostwhite:[248,248,255],gold:[255,215,0],goldenrod:[218,165,32],gray:[128,128,128],green:[0,128,0],greenyellow:[173,255,47],grey:[128,128,128],honeydew:[240,255,240],hotpink:[255,105,180],indianred:[205,92,92],indigo:[75,0,130],ivory:[255,255,240],khaki:[240,230,140],lavender:[230,230,250],lavenderblush:[255,240,245],lawngreen:[124,252,0],lemonchiffon:[255,250,205],lightblue:[173,216,230],lightcoral:[240,128,128],lightcyan:[224,255,255],lightgoldenrodyellow:[250,250,210],lightgray:[211,211,211],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightsalmon:[255,160,122],lightseagreen:[32,178,170],lightskyblue:[135,206,250],lightslategray:[119,136,153],lightslategrey:[119,136,153],lightsteelblue:[176,196,222],lightyellow:[255,255,224],lime:[0,255,0],limegreen:[50,205,50],linen:[250,240,230],magenta:[255,0,255],maroon:[128,0,0],mediumaquamarine:[102,205,170],mediumblue:[0,0,205],mediumorchid:[186,85,211],mediumpurple:[147,112,219],mediumseagreen:[60,179,113],mediumslateblue:[123,104,238],mediumspringgreen:[0,250,154],mediumturquoise:[72,209,204],mediumvioletred:[199,21,133],midnightblue:[25,25,112],mintcream:[245,255,250],mistyrose:[255,228,225],moccasin:[255,228,181],navajowhite:[255,222,173],navy:[0,0,128],oldlace:[253,245,230],olive:[128,128,0],olivedrab:[107,142,35],orange:[255,165,0],orangered:[255,69,0],orchid:[218,112,214],palegoldenrod:[238,232,170],palegreen:[152,251,152],paleturquoise:[175,238,238],palevioletred:[219,112,147],papayawhip:[255,239,213],peachpuff:[255,218,185],peru:[205,133,63],pink:[255,192,203],plum:[221,160,221],powderblue:[176,224,230],purple:[128,0,128],rebeccapurple:[102,51,153],red:[255,0,0],rosybrown:[188,143,143],royalblue:[65,105,225],saddlebrown:[139,69,19],salmon:[250,128,114],sandybrown:[244,164,96],seagreen:[46,139,87],seashell:[255,245,238],sienna:[160,82,45],silver:[192,192,192],skyblue:[135,206,235],slateblue:[106,90,205],slategray:[112,128,144],slategrey:[112,128,144],snow:[255,250,250],springgreen:[0,255,127],steelblue:[70,130,180],tan:[210,180,140],teal:[0,128,128],thistle:[216,191,216],tomato:[255,99,71],turquoise:[64,224,208],violet:[238,130,238],wheat:[245,222,179],white:[255,255,255],whitesmoke:[245,245,245],yellow:[255,255,0],yellowgreen:[154,205,50]};function luminance(_){const[t,n,o]=_.map(_=>_<=.04045?_/12.92:Math.pow((_+.055)/1.055,2.4));return.2126*t+.7152*n+.0722*o}function contrast_ratio_wcag_2_1(_,t){const n=luminance(_),o=luminance(t);return(Math.max(n,o)+.05)/(Math.min(n,o)+.05)}export{HSL_to_XYZ_D50,HSL_to_XYZ_D65,HWB_to_XYZ_D50,HWB_to_XYZ_D65,LCH_to_XYZ_D50,LCH_to_XYZ_D65,Lab_to_XYZ_D50,Lab_to_XYZ_D65,OKLCH_to_OKLab,OKLCH_to_XYZ_D50,OKLCH_to_XYZ_D65,OKLab_to_OKLCH,OKLab_to_XYZ,OKLab_to_XYZ_D50,OKLab_to_XYZ_D65,P3_to_XYZ_D50,P3_to_XYZ_D65,ProPhoto_RGB_to_XYZ_D50,ProPhoto_RGB_to_XYZ_D65,XYZ_D50_to_HSL,XYZ_D50_to_HWB,XYZ_D50_to_LCH,XYZ_D50_to_Lab,XYZ_D50_to_OKLCH,XYZ_D50_to_OKLab,XYZ_D50_to_P3,XYZ_D50_to_ProPhoto,XYZ_D50_to_XYZ_D50,XYZ_D50_to_XYZ_D65,XYZ_D50_to_a98_RGB,XYZ_D50_to_lin_P3,XYZ_D50_to_lin_sRGB,XYZ_D50_to_rec_2020,XYZ_D50_to_sRGB,XYZ_D65_to_HSL,XYZ_D65_to_HWB,XYZ_D65_to_LCH,XYZ_D65_to_Lab,XYZ_D65_to_OKLCH,XYZ_D65_to_OKLab,XYZ_D65_to_P3,XYZ_D65_to_ProPhoto,XYZ_D65_to_XYZ_D50,XYZ_D65_to_XYZ_D65,XYZ_D65_to_a98_RGB,XYZ_D65_to_lin_P3,XYZ_D65_to_lin_sRGB,XYZ_D65_to_rec_2020,XYZ_D65_to_sRGB,XYZ_to_OKLab,XYZ_to_lin_P3,XYZ_to_lin_sRGB,a98_RGB_to_XYZ_D50,a98_RGB_to_XYZ_D65,clip,contrast_ratio_wcag_2_1,gam_P3,gam_sRGB,inGamut,lin_P3,lin_P3_to_XYZ,lin_P3_to_XYZ_D50,lin_P3_to_XYZ_D65,lin_sRGB,lin_sRGB_to_XYZ,lin_sRGB_to_XYZ_D50,lin_sRGB_to_XYZ_D65,mapGamut,mapGamutRayTrace,G as namedColors,rec_2020_to_XYZ_D50,rec_2020_to_XYZ_D65,sRGB_to_XYZ_D50,sRGB_to_XYZ_D65};