---
title: tertiarySystemFill
framework: uikit
role: symbol
role_heading: Type Property
path: uikit/uicolor/tertiarysystemfill
---

# tertiarySystemFill

An overlay fill color for large shapes.

## Declaration

```swift
class var tertiarySystemFill: 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 large shapes, such as input fields, search bars, or buttons.

## See Also

### Fill colors

- [systemFill](uikit/uicolor/systemfill.md)
- [secondarySystemFill](uikit/uicolor/secondarysystemfill.md)
- [quaternarySystemFill](uikit/uicolor/quaternarysystemfill.md)