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# CIColorMatrix

The properties you use to configure a color matrix filter.

```
protocol CIColorMatrix : CIFilterProtocol
```

## Topics

### Instance Properties

[`aVector`](/documentation/CoreImage/CIColorMatrix/aVector)

The amount of alpha to multiply the source color values by.

[`bVector`](/documentation/CoreImage/CIColorMatrix/bVector)

The amount of blue to multiply the source color values by.

[`gVector`](/documentation/CoreImage/CIColorMatrix/gVector)

The amount of green to multiply the source color values by.

[`rVector`](/documentation/CoreImage/CIColorMatrix/rVector)

The amount of red to multiply the source color values by.

[`biasVector`](/documentation/CoreImage/CIColorMatrix/biasVector)

A vector that’s added to each color component.

[`inputImage`](/documentation/CoreImage/CIColorMatrix/inputImage)

The image to use as an input image.

## See Also

[`colorMatrix()`](/documentation/CoreImage/CIFilter-swift.class/colorMatrix())

Alters the colors in an image based on vectors provided.


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