RGB → HEX 변환

const ConvertRGBtoHex = (rgb) => {
		let result = "#";
		let rbgArr = rgb.split(",");
		for (let el of rbgArr) {
			let rgbNum = Number(el);
			let hexadecimal = rgbNum.toString(16);
			result += hexadecimal;
		}
		return result
	};
console.log(ConvertRGBtoHex('165,42,42')) // '#a52a2a'