---
title: secondarySystemFill
framework: uikit
role: symbol
role_heading: Type Property
path: uikit/uicolor/secondarysystemfill
---

# secondarySystemFill

An overlay fill color for medium-size shapes.

## Declaration

```swift
class var secondarySystemFill: UIColor { get }
```

## Discussion

Discussion Use system fill colors for items situated on top of an existing background color. System fill colors incorporate transparency to allow the background color to show through. Use this color to fill medium-size shapes, such as the background of a switch.

## See Also

### Fill colors

- [systemFill](uikit/uicolor/systemfill.md)
- [tertiarySystemFill](uikit/uicolor/tertiarysystemfill.md)
- [quaternarySystemFill](uikit/uicolor/quaternarysystemfill.md)