/* IMPORT */
import _ from '../utils/index.js';
import Color from '../color/index.js';
/* MAIN */
//SOURCE: https://planetcalc.com/7779
const luminance = (color) => {
    const { r, g, b } = Color.parse(color);
    const luminance = .2126 * _.channel.toLinear(r) + .7152 * _.channel.toLinear(g) + .0722 * _.channel.toLinear(b);
    return _.lang.round(luminance);
};
/* EXPORT */
export default luminance;