Color sorting in JavaScript

colorSorting.js

//Sorting Hex Color:
var scheme = [
"#4C4C4C","#1F2029","#35404E","#282938","#00A0BE","#C67C48","#32CF72",            "#4155D1","#B86838","#D81196","#149C92","#786DC4","#DB2C38","#83C057",          "#A4A4A4","#55747C","#FFFFFF"
];

    
var Color = function Color(hexVal) { //define a Color class for the color objects
    this.hex = hexVal;
};

constructColor = function(colorObj){
    var hex = colorObj.hex.substring(1);
    /* Get the RGB values to calculate the Hue. */
    var r = parseInt(hex.substring(0, 2), 16) / 255;
    var g = parseInt(hex.substring(2, 4), 16) / 255;
    var b = parseInt(hex.substring(4, 6), 16) / 255;
    
    /* Getting the Max and Min values for Chroma. */
    var max = Math.max.apply(Math, [r, g, b]);
    var min = Math.min.apply(Math, [r, g, b]);
    
    
    /* Variables for HSV value of hex color. */
    var chr = max - min;
    var hue = 0;
    var val = max;
    var sat = 0;

    
    if (val > 0) {
        /* Calculate Saturation only if Value isn't 0. */
        sat = chr / val;
        if (sat > 0) {
            if (r == max) {
                hue = 60 * (((g - min) - (b - min)) / chr);
                if (hue < 0) {
                    hue += 360;
                }
            } else if (g == max) {
                hue = 120 + 60 * (((b - min) - (r - min)) / chr);
            } else if (b == max) {
                hue = 240 + 60 * (((r - min) - (g - min)) / chr);
            }
        }
    }
    colorObj.chroma = chr;
    colorObj.hue = hue;
    colorObj.sat = sat;
    colorObj.val = val;
    colorObj.luma = 0.3 * r + 0.59 * g + 0.11 * b;
    colorObj.red = parseInt(hex.substring(0, 2), 16);
    colorObj.green = parseInt(hex.substring(2, 4), 16);
    colorObj.blue = parseInt(hex.substring(4, 6), 16);
    return colorObj;
};

sortColorsByLuma = function (colors) {
    return colors.sort(function (a, b) {
        return a.luma - b.luma;
    });
};

mapHex = function(color) {
	return color.hex;
}

outputColors = function(hexArray) { 
    var colors = [];
    $.each(hexArray, function (i, v) {
        var color = new Color(v);
        constructColor(color);
        colors.push(color);
    });
    
    sortColorsByLuma(colors);

		console.log(colors.map(mapHex));
};

outputColors(scheme);