@atlaskit/adf-schema/dist/es2019/utils/rgb-to-xyz.js

Shared package that contains the ADF-schema (json) and ProseMirror node/mark specs

export const rgbToXyz = rgb => {
  const convertRgbComponent = c => c > 0.04045 ? Math.pow((c + 0.055) / 1.055, 2.4) : c / 12.92;
  const convertXyzComponent = c => c > 0.008856452 ? Math.pow(c, 1 / 3) : c / 0.12841855 + 0.137931034;
  const r = convertRgbComponent(rgb.r / 255);
  const g = convertRgbComponent(rgb.g / 255);
  const b = convertRgbComponent(rgb.b / 255);
  return {
    x: convertXyzComponent((0.4124564 * r + 0.3575761 * g + 0.1804375 * b) / 0.95047),
    y: convertXyzComponent(0.2126729 * r + 0.7151522 * g + 0.072175 * b),
    z: convertXyzComponent((0.0193339 * r + 0.119192 * g + 0.9503041 * b) / 1.08883)
  };
};