HTML Hex to RGB without using System.Drawing C#, C#

HTML Hex to RGB without using System.Drawing C#

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    //By: Vaibhav J. 
    //vsj.1987@live.in
    
    public class Program
    {
        public static void Main(string[] args)
        {
            string[] hexes ={ "#FFFFFF","#C0C0C0","00000000","#000080","#55F27F","#F45F78A"};
            
            foreach(string hex in hexes)
            {
                int [] rgb = HexToRGB(hex);            
                string ans = string.Join(",",rgb);            
                Console.WriteLine(ans+"\n");
            }
        }
        
        public static int[] HexToRGB(string hex)
        {
            if (hex.LastIndexOf("#") > -1)
            {
                hex = hex.Replace("#", "");
            }
            
            //ignore the Opacity. ex: FF000000 => 000000 (remove FF)
            if(hex.Length>6)
            {
                int strt = hex.Length-6;
                hex = hex.Substring(strt, 6);
            }
            
            Console.WriteLine(hex);
            
            int _hex = int.Parse(hex, System.Globalization.NumberStyles.AllowHexSpecifier);
            Console.WriteLine("int convert = {0}", _hex);
            
            
            var r = _hex >> 16;
            var g = (_hex & 0x00FF00) >> 8;
            var b = _hex & 0x0000FF;
            return new int[] { r, g, b };
        }
    }
}


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