ColorPalette Class

ColorPalette Class


Defines an array of colors that make up a color palette. The colors are 32-bit ARGB colors. Not inheritable.

Namespace:   System.Drawing.Imaging
Assembly:  System.Drawing (in System.Drawing.dll)


public sealed class ColorPalette


Gets an array of Color structures.


Gets a value that specifies how to interpret the color information in the array of colors.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

You are not allowed to construct a ColorPalette object directly. If you created a ColorPalette object, you could then manipulate the palette size for a particular image, which is not allowed. Use the Image.Palette property to obtain a ColorPalette object.

The colors in the palette are limited to 32-bit ARGB colors. A 32-bit ARGB color has 8 bits each for alpha, red, green, and blue values. The lowest 8 bits make up the blue bit, the next 8 bits are green, the next 8 bits are red, and the most significant 8 bits are alpha. This means each component can vary from 0 to 255. Fully on is 255 and fully off is 0. Alpha is used to make the color value transparent (alpha = 0) or opaque (alpha = 255). The number of intensity levels in the image can be increased without increasing the number of colors used. This process creates what is called a halftone, and it offers increased contrast at a cost of decreased resolution.

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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