---
title: plusDarker
framework: swiftui
role: symbol
role_heading: Type Property
path: swiftui/graphicscontext/blendmode-swift.struct/plusdarker
---

# plusDarker

A mode that adds the inverse of the color components of the source and background images, and then inverts the result, producing a darkened composite.

## Declaration

```swift
static var plusDarker: GraphicsContext.BlendMode { get }
```

## Discussion

Discussion This mode implements the equation R = MAX(0, 1 - ((1 - D) + (1 - S))) where R is the composite image. S is the source image. D is the background.

## See Also

### Darkening

- [darken](swiftui/graphicscontext/blendmode-swift.struct/darken.md)
- [multiply](swiftui/graphicscontext/blendmode-swift.struct/multiply.md)
- [colorBurn](swiftui/graphicscontext/blendmode-swift.struct/colorburn.md)