# Changes to Color Helpers

### 4.2.1

_June 29, 2024_

- Optimize matrix multiplication

### 4.2.0

_April 21, 2024_

- Add `mapGamutRayTrace` function

### 4.1.0

_March 31, 2024_

- Add `contrast_ratio_wcag_2_1` function

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