Create RGB values from a full length HEX color code

hex2rgb.go

package main

import (
	"fmt"
	"strconv"
)

type Hex string

type RGB struct {
	Red uint8
	Green uint8
	Blue uint8
}

func Hex2RGB(hex Hex) (RGB, err) {
	rgb, err := strconv.ParseUint(string(hex), 16, 32)

	if err != nil {
		return nil, err
	}

	rgb = RGB{
		Red: uint8(rgb >> 16),
		Green: uint8((rgb >> 8) & 0xFF),
		Blue: uint8(rgb & 0xFF),
	}

	return rgb, nil
}

func main() {	
	// Usage:
	rgb, err := Hex2RGB(Hex("FFAAFF"))

	if err != nil {
		panic("Couldn't convert hex to rgb")
	}

	fmt.Println(rgb.Red, rgb.Green, rgb.Blue)
}