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  "title" : "Display Fade Blend Fractions"
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# Display Fade Blend Fractions

The lower and upper bounds for blend color fractions during a display fade operation.

## Discussion

For general information about blend fractions, see the data type [`CGDisplayBlendFraction`](/documentation/CoreGraphics/CGDisplayBlendFraction). For information about how these constants are used, see the function [`CGDisplayFade(_:_:_:_:_:_:_:_:)`](/documentation/CoreGraphics/CGDisplayFade(_:_:_:_:_:_:_:_:)).

## Topics

### Constants

[`var kCGDisplayBlendNormal: Double`](/documentation/CoreGraphics/kCGDisplayBlendNormal)

The blend color is not applied at the start or end of a fade operation.

[`var kCGDisplayBlendSolidColor: Double`](/documentation/CoreGraphics/kCGDisplayBlendSolidColor)

The user sees only the blend color at the start or end of a fade operation.


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