---
title: r3
framework: swiftui
role: symbol
role_heading: Instance Property
path: swiftui/colormatrix/r3
---

# r3

## Declaration

```swift
var r3: Float
```

## See Also

### Third column

- [g3](swiftui/colormatrix/g3.md)
- [b3](swiftui/colormatrix/b3.md)
- [a3](swiftui/colormatrix/a3.md)