---
title: shadowOpacity
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/calayer/shadowopacity
---

# shadowOpacity

The opacity of the layer’s shadow. Animatable.

## Declaration

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

## Discussion

Discussion The value in this property must be in the range 0.0 (transparent) to 1.0 (opaque). The default value of this property is 0.0.

## See Also

### Modifying the layer’s appearance

- [contentsGravity](quartzcore/calayer/contentsgravity.md)
- [Contents Gravity Values](quartzcore/contents-gravity-values.md)
- [opacity](quartzcore/calayer/opacity.md)
- [isHidden](quartzcore/calayer/ishidden.md)
- [masksToBounds](quartzcore/calayer/maskstobounds.md)
- [mask](quartzcore/calayer/mask.md)
- [isDoubleSided](quartzcore/calayer/isdoublesided.md)
- [cornerRadius](quartzcore/calayer/cornerradius.md)
- [maskedCorners](quartzcore/calayer/maskedcorners.md)
- [CACornerMask](quartzcore/cacornermask.md)
- [borderWidth](quartzcore/calayer/borderwidth.md)
- [borderColor](quartzcore/calayer/bordercolor.md)
- [backgroundColor](quartzcore/calayer/backgroundcolor.md)
- [shadowRadius](quartzcore/calayer/shadowradius.md)
- [shadowOffset](quartzcore/calayer/shadowoffset.md)