function hexToRgb(sHex) {

		sHex = unifyHexNotation(sHex);

		const sResult = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(sHex);

		return (sResult ? "rgb(" + parseInt(sResult[1], 16) + ", " + parseInt(sResult[2], 16) + ", " + parseInt(sResult[3], 16) + ")" : sHex);
	}
converts a hex color value to RGB
@param {string} sHex a hex color value in #rgb or #rrggbb value
@return {string} the rgv(r,g,b) color value