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UI Colors vs Happy Hues: catalog facts
UI Colors	Happy Hues
Freemium Free to use, with a paid Pro upgrade that unlocks extra options.	Free Free web tool.
Web	Web
Generates full Tailwind shade scales from one color Previews palettes on realistic UI examples and shadcn/ui components	Shows palettes in real UI context instead of flat swatches Free to use with no signup
Some features require a Pro subscription Focused on Tailwind CSS naming and scales	Limited to the curated set of palettes provided Web-based only, no downloadable app
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.