'Declaration
 
Public Sub ColorRGBtoHSL( _
   ByVal Red As Byte, _
   ByVal Green As Byte, _
   ByVal Blue As Byte, _
   ByRef Hue As Single, _
   ByRef Saturation As Single, _
   ByRef Lightness As Single _
) 

public void ColorRGBtoHSL( 
   byte Red,
   byte Green,
   byte Blue,
   ref float Hue,
   ref float Saturation,
   ref float Lightness
)

public procedure ColorRGBtoHSL( 
    Red: Byte;
    Green: Byte;
    Blue: Byte;
   var  Hue: Single;
   var  Saturation: Single;
   var  Lightness: Single
); 

public function ColorRGBtoHSL( 
   Red : byte,
   Green : byte,
   Blue : byte,
   Hue : float,
   Saturation : float,
   Lightness : float
);

public: void ColorRGBtoHSL( 
   byte Red,
   byte Green,
   byte Blue,
   ref float Hue,
   ref float Saturation,
   ref float Lightness
) 

public:
void ColorRGBtoHSL( 
   byte Red,
   byte Green,
   byte Blue,
   float% Hue,
   float% Saturation,
   float% Lightness
) 

Parameters

Red

The input value for the red component. Use the value between 0 and 255.

Green

The input value for the green component. Use the value between 0 and 255.

Blue

The input value for the blue component. Use the value between 0 and 255.

Hue

Output parameter. The resulting value for the hue component between -1 and 5.

Saturation

Output parameter. The resulting value for the saturation component between 0 and 1.

Lightness

Output parameter. The resulting value for the lightness component between 0 and 1.

Reference

GdPictureImaging Class
GdPictureImaging Members
ColorHSLtoRGB Method