JavaScript convert base10 color to HEX color

Base10 to HEX color

/**
 * Converts a BGR base10 color to an RGB Hex value.
 *
 * @method colorToHexString
 * @param {Integer} dColor A color as integer.
 * @returns {String} The RGB hex code as string.
 */
function colorToHexString(dColor) {
    return '#' + ("000000" + (((dColor & 0xFF) << 16) + (dColor & 0xFF00) + ((dColor >> 16) & 0xFF)).toString(16)).slice(-6);
}

/**
 * Converts RGB Hex string to a BGR base10 color.
 *
 * @method hexStringToColor
 * @param {String} hex A hex code as string.
 * @returns {Integer} The integer in base10 format.
 */
function hexStringToColor(hex) {
    var r = parseInt(hex.slice(1, 3), 16),
        g = parseInt(hex.slice(3, 5), 16),
        b = parseInt(hex.slice(5, 7), 16);
    return (r | g << 8 | b << 16);
}

Did not work for me but check out https://gist.github.com/agirorn/0e740d012b620968225de58859ccef5c#gistcomment-2662867