---
title: instanceAlphaOffset
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/careplicatorlayer/instancealphaoffset
---

# instanceAlphaOffset

Defines the offset added to the alpha component of the color for each replicated instance. Animatable.

## Declaration

```swift
var instanceAlphaOffset: Float { get set }
```

## Discussion

Discussion The instanceAlphaOffset is added to the alpha color component of instance k-1 to produce the modulation color of instance k. Default is 0.0.

## See Also

### Accessing Instance Color Values

- [instanceColor](quartzcore/careplicatorlayer/instancecolor.md)
- [instanceRedOffset](quartzcore/careplicatorlayer/instanceredoffset.md)
- [instanceGreenOffset](quartzcore/careplicatorlayer/instancegreenoffset.md)
- [instanceBlueOffset](quartzcore/careplicatorlayer/instanceblueoffset.md)