Algorithmic Theming Engines: Building Self-Correcting Color Systems With contrast-color()

Seventy percent of websites still fail basic WCAG contrast checks in 2025. After years of design system tooling, accessibility linters, and JavaScript libraries, nothing moved the needle. We didn’t need better libraries. We needed better CSS. contrast-color() is that better CSS.

https://www.smashingmagazine.com/2026/05/building-self-correcting-color-systems-contrast-color/