colorjs.io/dist/color.min.js

Let’s get serious about color

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C={D50:[.3457/.3585,1,.2958/.3585],D65:[.3127/.329,1,.3583/.329]};function R(e){return Array.isArray(e)?e:C[e]}function _(t,r,a,n={}){if(t=R(t),r=R(r),!t||!r)throw new TypeError(`Missing white point to convert ${t?"":"from"}${t||r?"":"/"}${r?"":"to"}`);if(t===r)return a;let o={W1:t,W2:r,XYZ:a,options:n};if(y.run("chromatic-adaptation-start",o),o.M||(o.W1===C.D65&&o.W2===C.D50?o.M=[[1.0479297925449969,.022946870601609652,-.05019226628920524],[.02962780877005599,.9904344267538799,-.017073799063418826],[-.009243040646204504,.015055191490298152,.7518742814281371]]:o.W1===C.D50&&o.W2===C.D65&&(o.M=[[.955473421488075,-.02309845494876471,.06325924320057072],[-.0283697093338637,1.0099953980813041,.021041441191917323],[.012314014864481998,-.020507649298898964,1.330365926242124]])),y.run("chromatic-adaptation-end",o),o.M)return e(o.M,o.XYZ);throw new TypeError("Only Bradford CAT with white points D50 and D65 supported for now.")}const B=new Set(["<number>","<percentage>","<angle>"]);function 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S,E=2*Math.sqrt(M*b)*Math.sin(C*F/2),I=(o+l)/2,L=(b+M)/2,z=J(L);S=b*M==0?N:k<=180?N/2:N<360?(N+360)/2:(N-360)/2;let A=(I-50)**2,P=1+.015*A/Math.sqrt(20+A),j=1+.045*L,O=1;O-=.17*Math.cos((S-30)*F),O+=.24*Math.cos(2*S*F),O+=.32*Math.cos((3*S+6)*F),O-=.2*Math.cos((4*S-63)*F);let $=1+.015*L*O,q=30*Math.exp(-1*((S-275)/25)**2),D=2*Math.sqrt(z/(z+X)),H=(R/(r*P))**2;return H+=(_/(a*j))**2,H+=(E/(n*$))**2,H+=-1*Math.sin(2*q*F)*D*(_/(a*j))*(E/(n*$)),Math.sqrt(H)}const U=[[.819022437996703,.3619062600528904,-.1288737815209879],[.0329836539323885,.9292868615863434,.0361446663506424],[.0481771893596242,.2642395317527308,.6335478284694309]],K=[[1.2268798758459243,-.5578149944602171,.2813910456659647],[-.0405757452148008,1.112286803280317,-.0717110580655164],[-.0763729366746601,-.4214933324022432,1.5869240198367816]],V=[[.210454268309314,.7936177747023054,-.0040720430116193],[1.9779985324311684,-2.42859224204858,.450593709617411],[.0259040424655478,.7827717124575296,-.8086757549230774]],ee=[[1,.3963377773761749,.2158037573099136],[1,-.1055613458156586,-.0638541728258133],[1,-.0894841775298119,-1.2914855480194092]];var te=new S({id:"oklab",name:"Oklab",coords:{l:{refRange:[0,1],name:"Lightness"},a:{refRange:[-.4,.4]},b:{refRange:[-.4,.4]}},white:"D65",base:L,fromBase(t){let r=e(U,t).map((e=>Math.cbrt(e)));return e(V,r)},toBase(t){let r=e(ee,t).map((e=>e**3));return e(K,r)},formats:{oklab:{coords:["<percentage> | <number>","<number> | 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