---
title: saturationBlendMode()
framework: coreimage
role: symbol
role_heading: Type Method
path: coreimage/cifilter-swift.class/saturationblendmode()
---

# saturationBlendMode()

Blends the colors and saturation values of two images.

## Declaration

```swift
class func saturationBlendMode() -> any CIFilter & CICompositeOperation
```

## Return Value

Return Value The modified image.

## Discussion

Discussion This method applies the saturation-blend mode filter to an image. The effect uses the values of the hue and luminance from the background image with the saturation of the input image to produce the output. The saturation-blend mode filter uses the following properties: The following code creates a filter that results in the image taking on the colors of the background image with low saturated values becoming gray. func saturationBlendMode(inputImage: CIImage, backgroundImage: CIImage) -> CIImage {     let colorBlendFilter = CIFilter.saturationBlendMode()     colorBlendFilter.inputImage = inputImage     colorBlendFilter.backgroundImage = backgroundImage     return colorBlendFilter.outputImage! }

## See Also

### Filters

- [additionCompositing()](coreimage/cifilter-swift.class/additioncompositing().md)
- [colorBlendMode()](coreimage/cifilter-swift.class/colorblendmode().md)
- [colorBurnBlendMode()](coreimage/cifilter-swift.class/colorburnblendmode().md)
- [colorDodgeBlendMode()](coreimage/cifilter-swift.class/colordodgeblendmode().md)
- [darkenBlendMode()](coreimage/cifilter-swift.class/darkenblendmode().md)
- [differenceBlendMode()](coreimage/cifilter-swift.class/differenceblendmode().md)
- [divideBlendMode()](coreimage/cifilter-swift.class/divideblendmode().md)
- [exclusionBlendMode()](coreimage/cifilter-swift.class/exclusionblendmode().md)
- [hardLightBlendMode()](coreimage/cifilter-swift.class/hardlightblendmode().md)
- [hueBlendMode()](coreimage/cifilter-swift.class/hueblendmode().md)
- [lightenBlendMode()](coreimage/cifilter-swift.class/lightenblendmode().md)
- [linearBurnBlendMode()](coreimage/cifilter-swift.class/linearburnblendmode().md)
- [linearDodgeBlendMode()](coreimage/cifilter-swift.class/lineardodgeblendmode().md)
- [linearLightBlendMode()](coreimage/cifilter-swift.class/linearlightblendmode().md)
- [luminosityBlendMode()](coreimage/cifilter-swift.class/luminosityblendmode().md)