vtm_css_colcon/HslToRgb.js

A CSS Colors Converter 🤪

function HslToRgb(h, s, l) {
    let r, g, b;
    if (s === 0) {
        r = g = b = l; // achromatic
    } else {
        let hue2rgb = function hue2rgb(p, q, t) {
            if (t < 0) t += 1;
            if (t > 1) t -= 1;
            if (t < 1 / 6) return p + (q - p) * 6 * t;
            if (t < 1 / 2) return q;
            if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
            return p;
        };

        let q = l < 0.5 ? l * (1 + s) : l + s - l * s;
        let p = 2 * l - q;
        r = hue2rgb(p, q, h + 1 / 3);
        g = hue2rgb(p, q, h);
        b = hue2rgb(p, q, h - 1 / 3);
    }
    return `rgb(${Math.round(r * 255)}, ${Math.round(g * 255)}, ${Math.round(b * 255)})`;
}    

export default HslToRgb;