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# saturation

A blend kernel that uses the luminance and hue values of the background image with the saturation of the foreground image.

```
class var saturation: CIBlendKernel { get }
```

## Discussion

![The result of using the saturation blend kernel (background image is top left, foreground image is bottom left)](images/com.apple.coreimage/media-2926876@2x.png)

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