RGB To Hexadecimal

This algorithm converts RGB color model to hexadecimal color code.

• C#
• VB.Net
• C
• C++
• PHP

									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 string RGBToHexadecimal(RGB rgb)
{
	string rs = DecimalToHexadecimal(rgb.R);
	string gs = DecimalToHexadecimal(rgb.G);
	string bs = DecimalToHexadecimal(rgb.B);

	return '#' + rs + gs + bs;
}

private static string DecimalToHexadecimal(int dec)
{
	if (dec <= 0)
		return "00";

	int hex = dec;
	string hexStr = string.Empty;

	while (dec > 0)
	{
		hex = dec % 16;

		if (hex < 10)
			hexStr = hexStr.Insert(0, Convert.ToChar(hex + 48).ToString());
		else
			hexStr = hexStr.Insert(0, Convert.ToChar(hex + 55).ToString());

		dec /= 16;
	}

	return hexStr;
}
								

Example

									RGB data = new RGB(82, 0, 87);
string value = RGBToHexadecimal(data);
								

Output

									#520057