---
title: "contrast(_:)"
framework: swiftui
role: symbol
role_heading: Type Method
path: "swiftui/graphicscontext/filter/contrast(_:)"
---

# contrast(_:)

Returns a filter that applies a contrast adjustment.

## Declaration

```swift
static func contrast(_ amount: Double) -> GraphicsContext.Filter
```

## Parameters

- `amount`: An amount to adjust the contrast. A value of zero leaves the result completely gray. A value of one leaves the result unchanged. You can use values greater than one.

## Return Value

Return Value A filter that applies a contrast adjustment.

## Discussion

Discussion This filter is equivalent to the contrast filter primitive defined by the Scalable Vector Graphics (SVG) specification.

## See Also

### Changing brightness and contrast

- [brightness(_:)](swiftui/graphicscontext/filter/brightness(_:).md)