CSS rgb() Color

const re = new RegExp("rgba?\\(\\s*\\d{1,3}\\s*,\\s*\\d{1,3}\\s*,\\s*\\d{1,3}(?:\\s*,\\s*(?:0|1|0?\\.\\d+))?\\s*\\)", "gi");
const input = "rgb(255, 87, 51)";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

import re

pattern = re.compile(r"rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}(?:\s*,\s*(?:0|1|0?\.\d+))?\s*\)", re.IGNORECASE)
input_text = "rgb(255, 87, 51)"
for m in pattern.finditer(input_text):
    print(m.group(0))

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`(?i)rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}(?:\s*,\s*(?:0|1|0?\.\d+))?\s*\)`)
	input := `rgb(255, 87, 51)`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}