convertXyz50ToLab.js•488 B
import { k, e } from '../xyz50/constants.js';
import { D50 } from '../constants.js';
const f = value => (value > e ? Math.cbrt(value) : (k * value + 16) / 116);
const convertXyz50ToLab = ({ x, y, z, alpha }) => {
let f0 = f(x / D50.X);
let f1 = f(y / D50.Y);
let f2 = f(z / D50.Z);
let res = {
mode: 'lab',
l: 116 * f1 - 16,
a: 500 * (f0 - f1),
b: 200 * (f1 - f2)
};
if (alpha !== undefined) {
res.alpha = alpha;
}
return res;
};
export default convertXyz50ToLab;