注意Color.GetSaturation()并Color.GetBrightness()返回HSL值，而不是HSV。

以下代码演示了不同之处。

Color original = Color.FromArgb(50, 120, 200);

// original = {Name=ff3278c8, ARGB=(255, 50, 120, 200)}

double hue;

double saturation;

double value;

ColorToHSV(original, out hue, out saturation, out value);

// hue        = 212.0

// saturation = 0.75

// value      = 0.78431372549019607

Color copy = ColorFromHSV(hue, saturation, value);

// copy = {Name=ff3278c8, ARGB=(255, 50, 120, 200)}

// Compare that to the HSL values that the .NET framework provides:

original.GetHue();        // 212.0

original.GetSaturation(); // 0.6

original.GetBrightness(); // 0.490196079

以下C＃代码就是您想要的。它使用维基百科上描述的算法在RGB和HSV之间进行转换。范围为0 - 360表示hue，0 - 1表示saturation或value。

public static void ColorToHSV(Color color, out double hue, out double saturation, out double value)

{

int max = Math.Max(color.R, Math.Max(color.G, color.B));

int min = Math.Min(color.R, Math.Min(color.G, color.B));

hue = color.GetHue();

saturation = (max == 0) ? 0 : 1d - (1d * min / max);

value = max / 255d;

}

public static Color ColorFromHSV(double hue, double saturation, double value)

{

int hi = Convert.ToInt32(Math.Floor(hue / 60)) % 6;

double f = hue / 60 - Math.Floor(hue / 60);

value = value * 255;

int v = Convert.ToInt32(value);

int p = Convert.ToInt32(value * (1 - saturation));

int q = Convert.ToInt32(value * (1 - f * saturation));

int t = Convert.ToInt32(value * (1 - (1 - f) * saturation));

if (hi == 0)

return Color.FromArgb(255, v, t, p);

else if (hi == 1)

return Color.FromArgb(255, q, v, p);

else if (hi == 2)

return Color.FromArgb(255, p, v, t);

else if (hi == 3)

return Color.FromArgb(255, p, q, v);

else if (hi == 4)

return Color.FromArgb(255, t, p, v);

else

return Color.FromArgb(255, v, p, q);

}