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pex-color

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Color utilities (css, p3, hex, hsl, hsv, hwb, lab, lch, xyz, okhsl, okhsv, oklab, oklch, hpluv, hsluv, lchuv, bytes) for PEX.

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import { fromLabD50, toLabD50 } from "./lab.js"; import { lchToLab, labToLch } from "./utils.js"; /** * @typedef {number[]} lch CIELCh Luminance Chroma Hue. Cylindrical form of Lab. * * All components in the range 0 <= x <= 1 * @see {@link https://en.wikipedia.org/wiki/CIELAB_color_space#Cylindrical_model} */ /** * Updates a color based on LCH values and alpha. * @alias module:pex-color.fromLCH * @param {import("./color.js").color} color * @param {number} l * @param {number} c * @param {number} h * @param {number} [a] * @returns {import("./color.js").color} */ export function fromLCH(color, l, c, h, a) { lchToLab(l, c, h, color); return fromLabD50(color, color[0], color[1], color[2], a); } /** * Returns a LCH representation of a given color. * @alias module:pex-color.toLCH * @param {import("./color.js").color} color * @param {Array} out * @returns {lch} */ export function toLCH(color, out = []) { toLabD50(color, out); return labToLch(out[0], out[1], out[2], out); }