---
title: red_x
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/vimagergbprimaries/red_x
---

# red_x

The red x value according to the CIE 1931 color space.

## Declaration

```swift
var red_x: Float
```

## See Also

### Color primary properties

- [green_x](accelerate/vimagergbprimaries/green_x.md)
- [blue_x](accelerate/vimagergbprimaries/blue_x.md)
- [white_x](accelerate/vimagergbprimaries/white_x.md)
- [red_y](accelerate/vimagergbprimaries/red_y.md)
- [green_y](accelerate/vimagergbprimaries/green_y.md)
- [blue_y](accelerate/vimagergbprimaries/blue_y.md)
- [white_y](accelerate/vimagergbprimaries/white_y.md)