Takes in a hex value and converts it to RGB.

hexToRGB.js

hexToRGB (hex) {
        if (!hex) {
            return '';
        }
        
        // remove the hash
        hex = hex.replace('#', '');
        
        // if shorthand, expand it
        if (hex.length < 6) {
            let shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
            hex = hex.replace(shorthandRegex, function(m, r, g, b) {
                return r + r + g + g + b + b;
            });
        }
        
        // convert to RGB
        hex = parseInt(hex, 16);
        let r = hex >> 16;
        let g = hex >> 8 & 0xFF;
        let b = hex & 0xFF;
        
        return [r, g, b].join();
}