# LCH Colors in CSS: What, Why, and How?

Canonical URL: https://colorcurio.us/library/verou-lch-in-css
Source type: Library entry
Resource URL: https://lea.verou.me/blog/2020/04/lch-colors-in-css-what-why-and-how/
Added: 2026-09-28

## Summary

The case for lch() in CSS: perceptual lightness, predictable adjustments, and access to P3 colors.

Written before browsers shipped it, and the argument that set up the later move to OKLCH.

- Resource: [LCH Colors in CSS: What, Why, and How?](https://lea.verou.me/blog/2020/04/lch-colors-in-css-what-why-and-how/)
- By: Lea Verou
- Published: 2020
- Kind: writing (article)
- Level: intermediate
- Tags: color-spaces, gamut, design-systems, cielab, designer, developer, tutorial, css, web

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