static extern int ColorHLSToRGB(int H, int L, int S);

    static extern int ColorHLSToRGB(int H, int L, int S);

      // ColorHLSToRGB returns a Win32 RGB value (0x00BBGGRR).  To convert to System.Drawing.Color

      return ColorTranslator.FromWin32(ColorHLSToRGB(H,L,S));