Plex UI Blog
Notes from the system layer
Practical writing on design systems, component APIs, and the details that keep product UI consistent across Figma and React.
Why AI-Generated CSS Breaks in Dark Mode
AI tools hardcode hex colors instead of using design tokens. Dark mode exposes the problem instantly. Here is how to fix it.
Design Tokens: What AI Code Editors Get Wrong
AI editors write valid CSS but miss design intent. Here is how design tokens get lost in translation and what to do about it.
Best React Component Libraries in 2026
A practical comparison of the best React component libraries in 2026 — features, trade-offs, and how to pick the right one for your project.
Do Startups Need a Design System?
Startups think they are too early for a design system. With AI writing UI code faster than ever, you are too early to skip one.
Why 9 Button Sizes, Not 4
Four button sizes are fine for demos. Real products need a broader, unified size scale across controls.
Why Your AI Code Editor Needs a Design System
AI code editors ship UI faster, but without a design system they also ship inconsistency. Here is how to keep quality high.