RGB To Hexadecimal

This algorithm converts RGB color model to hexadecimal color code.

• C#
• VB.Net
• C
• C++
• PHP

									/*****Please include following header files*****/
// string
/***********************************************/

/*****Please use following namespaces*****/
// std
/*****************************************/

class RGB
{
public:
	unsigned char R;
	unsigned char G;
	unsigned char B;

	RGB(unsigned char r, unsigned char g, unsigned char b)
	{
		R = r;
		G = g;
		B = b;
	}

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

static string DecimalToHexadecimal(int dec) {
	if (dec < 1) return "00";

	int hex = dec;
	string hexStr = "";

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

		if (hex < 10)
			hexStr = hexStr.insert(0, string(1, (hex + 48)));
		else
			hexStr = hexStr.insert(0, string(1, (hex + 55)));

		dec /= 16;
	}

	return hexStr;
}

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

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

Example

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

Output

									#520057