Hexadecimal To RGB

This algorithm converts hexadecimal color code to RGB color model.

• C#
• VB.Net
• C
• C++
• PHP
• Python

									public struct RGB
{
	private byte _r;
	private byte _g;
	private byte _b;

	public RGB(byte r, byte g, byte b)
	{
		this._r = r;
		this._g = g;
		this._b = b;
	}

	public byte R
	{
		get { return this._r; }
		set { this._r = value; }
	}

	public byte G
	{
		get { return this._g; }
		set { this._g = value; }
	}

	public byte B
	{
		get { return this._b; }
		set { this._b = value; }
	}

	public bool Equals(RGB rgb)
	{
		return (this.R == rgb.R) && (this.G == rgb.G) && (this.B == rgb.B);
	}
}

public static RGB HexadecimalToRGB(string hex)
{
	if (hex.StartsWith("#"))
		hex = hex.Remove(0, 1);

	byte r = (byte)HexadecimalToDecimal(hex.Substring(0, 2));
	byte g = (byte)HexadecimalToDecimal(hex.Substring(2, 2));
	byte b = (byte)HexadecimalToDecimal(hex.Substring(4, 2));

	return new RGB(r, g, b);
}

private static int HexadecimalToDecimal(string hex)
{
	hex = hex.ToUpper();

	int hexLength = hex.Length;
	double dec = 0;

	for (int i = 0; i < hexLength; ++i)
	{
		byte b = (byte)hex[i];

		if (b >= 48 && b <= 57)
			b -= 48;
		else if (b >= 65 && b <= 70)
			b -= 55;

		dec += b * Math.Pow(16, ((hexLength - i) - 1));
	}

	return (int)dec;
}
								

Example

									string data = "#520057";
RGB value = HexadecimalToRGB(data);
								

Output

									R: 82
G: 0
B: 87