# Changes to CSS Color Parser

### 4.2.0

_August 15, 2026_

- Add `computedValue()` serialization function for color data.
- Mandatory `alpha` in the relative `alpha()` function.
- Updated [`@csstools/color-helpers`](https://github.com/csstools/postcss-plugins/tree/main/packages/color-helpers) to [`6.1.1`](https://github.com/csstools/postcss-plugins/tree/main/packages/color-helpers/CHANGELOG.md#611) (patch)

[Full CHANGELOG](https://github.com/csstools/postcss-plugins/tree/main/packages/css-color-parser/CHANGELOG.md)