https://libregraphicsmeeting.org/2026/js/culori-4.0.1/src/oklab/convertOklabToLrgb.js

1const convertOklabToLrgb = ({ l, a, b, alpha }) => {
2	if (l === undefined) l = 0;
3	if (a === undefined) a = 0;
4	if (b === undefined) b = 0;
5	let L = Math.pow(
6		l * 0.99999999845051981432 +
7			0.39633779217376785678 * a +
8			0.21580375806075880339 * b,
9		3
10	);
11	let M = Math.pow(
12		l * 1.0000000088817607767 -
13			0.1055613423236563494 * a -
14			0.063854174771705903402 * b,
15		3
16	);
17	let S = Math.pow(
18		l * 1.0000000546724109177 -
19			0.089484182094965759684 * a -
20			1.2914855378640917399 * b,
21		3
22	);
23
24	let res = {
25		mode: 'lrgb',
26		r:
27			+4.076741661347994 * L -
28			3.307711590408193 * M +
29			0.230969928729428 * S,
30		g:
31			-1.2684380040921763 * L +
32			2.6097574006633715 * M -
33			0.3413193963102197 * S,
34		b:
35			-0.004196086541837188 * L -
36			0.7034186144594493 * M +
37			1.7076147009309444 * S
38	};
39
40	if (alpha !== undefined) {
41		res.alpha = alpha;
42	}
43
44	return res;
45};
46
47export default convertOklabToLrgb;