vtm_css_colcon/RgbToHsl.js

A CSS Colors Converter 🤪

function RgbToHsl(r, g, b) {
    r /= 255;
    g /= 255; 
    b /= 255;
    let max = Math.max(r, g, b), min = Math.min(r, g, b);
    let h, s, l = (max + min) / 2;

    if (max === min) {
        h = s = 0; // achromatic
    } else {
        let d = max - min;
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
        switch (max) {
            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
            case g: h = (b - r) / d + 2; break;
            case b: h = (r - g) / d + 4; break;
            default: h = 0;
        }
        h /= 6;
    }
    return `hsl(${h}, ${s}, ${l})`;
}

export default RgbToHsl;