How to convert color name to the corresponding hexadecimal representation?

Question

For example:

blue 

converts to:

#0000FF

I wrote it as:

Color color = Color.FromName("blue");

But I don't know how to get the hexadecimal representation.

Answer 1

You're half way there. Use .ToArgb to convert it to it's numberical value, then format it as a hex value.

int ColorValue = Color.FromName("blue").ToArgb();
string ColorHex = string.Format("{0:x6}", ColorValue);

Answer 2

var rgb = color.ToArgb() & 0xFFFFFF; // drop A component
var hexString = String.Format("#{0:X6}", rgb);

or just

var hexString = String.Format("#{0:X2}{1:X2}{2:X2}", color.R, color.G, color.B);