2022-04-18

functionrgb2hex(sRGB) {

    returnsRGB.replace(/^rgb\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\)$/,function($0,$1,$2,$3){

        return'#'+('0'+(+$1).toString(16)).slice(-2)+('0'+(+$2).toString(16)).slice(-2)+('0'+(+$3).toString(16)).slice(-2);

    });

}