Question

How can I convert a RGB Color to HSV using C#?
I’ve searched for a fast method without using any external library.

Answer 1

Have you considered simply using System.Drawing namespace? For example:

System.Drawing.Color color = System.Drawing.Color.FromArgb(red, green, blue); float hue = color.GetHue(); float saturation = color.GetSaturation(); float lightness = color.GetBrightness(); 

Note that it’s not exactly what you’ve asked for (see differences between HSL and HSV and the Color class does not have a conversion back from HSL/HSV but the latter is reasonably easy to add.