Farbtastic convert HSL back to RGB or Hex

Question

Edit: Posting Solution

I wanted to create color swatches based on the color chosen in Farbtastic. I did my calculations on the HSL value, because i

Answer 1

Michael Jackson has this conversion, along with other colour conversions, in JavaScript, on his site.

function hslToRgb(h, s, l) {
    var r, g, b;

    if (s == 0) {
        r = g = b = l; // achromatic
    } else {
        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;
        }

        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
        var p = 2 * l - q;
        r = hue2rgb(p, q, h + 1 / 3);
        g = hue2rgb(p, q, h);
        b = hue2rgb(p, q, h - 1 / 3);
    }

    return [r * 255, g * 255, b * 255];
}

Answer 2

I decided to seperate the functions and rewrite them a little so they work properly.
Ended up with this :

function hsl2rgb(h, s, l) {
    var m1, m2, hue;
    var r, g, b
    s /=100;
    l /= 100;
    if (s == 0)
        r = g = b = (l * 255);
    else {
        if (l <= 0.5)
            m2 = l * (s + 1);
        else
            m2 = l + s - l * s;
        m1 = l * 2 - m2;
        hue = h / 360;
        r = Math.round(HueToRgb(m1, m2, hue + 1/3));
        g = Math.round(HueToRgb(m1, m2, hue));
        b = Math.round(HueToRgb(m1, m2, hue - 1/3));
    }
    return {r: r, g: g, b: b};
}

function HueToRgb(m1, m2, hue) {
    var v;
    if (hue < 0)
        hue += 1;
    else if (hue > 1)
        hue -= 1;

    if (6 * hue < 1)
        v = m1 + (m2 - m1) * hue * 6;
    else if (2 * hue < 1)
        v = m2;
    else if (3 * hue < 2)
        v = m1 + (m2 - m1) * (2/3 - hue) * 6;
    else
        v = m1;

    return 255 * v;
}

It's called by doing:

//the HSL values to use
var h = 30;
var s = 20;
var l = 70;

//call the function into a variable, returns an object rgb = {r:163, g:174, b:196}
var rgb = hsl2rgb(h, s, l);

//can now be accessed with rgb.r etc, and remember that the last two are percentages

Here's a DEMONSTRATION

If your variable newcolor is a string, you will have to do:

var colorArray = newcolor.split(','),
    h = colorArray[0],  //  0.10434092941291336
    s = colorArray[1],  //  1
    l = colorArray[2];  //  0.756

to get the HSL values into the right variables.