---
title: linearExposure
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uicolor/linearexposure
---

# linearExposure

The linear brightness multiplier that was applied when generating this color. Colors created with an exposure by UIColor create CGColors that are tagged with a contentHeadroom value. While CGColors created without a contentHeadroom tag will return 0 from CGColorGetHeadroom, UIColors generated in a similar fashion return a linearExposure of 1.0.

## Declaration

```swift
var linearExposure: CGFloat { get }
```

## See Also

### Getting the color information

- [Determining color values with color spaces](uikit/determining-color-values-with-color-spaces.md)
- [cgColor](uikit/uicolor/cgcolor.md)
- [ciColor](uikit/uicolor/cicolor.md)
- [getHue(_:saturation:brightness:alpha:)](uikit/uicolor/gethue(_:saturation:brightness:alpha:).md)
- [getRed(_:green:blue:alpha:)](uikit/uicolor/getred(_:green:blue:alpha:).md)
- [getWhite(_:alpha:)](uikit/uicolor/getwhite(_:alpha:).md)
- [accessibilityName](uikit/uicolor/accessibilityname.md)