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Happy Hues vs UI Colors: catalog facts
Happy Hues	UI Colors
Best for: Curated color palettes shown applied live to an example website UI	Best for: Web developers building a Tailwind CSS color palette
Free Free web tool.	Free + paid options Free to use, with a paid Pro upgrade that unlocks extra options.
Web	Web
Shows palettes in real UI context instead of flat swatches Free to use with no signup	Generates full Tailwind shade scales from one color Previews palettes on realistic UI examples and shadcn/ui components All 3 strengths for UI Colors Generates full Tailwind shade scales from one color Previews palettes on realistic UI examples and shadcn/ui components Adds neutral and status color scales
Limited to the curated set of palettes provided Web-based only, no downloadable app	Some features require a Pro subscription Focused on Tailwind CSS naming and scales
Web application	Web application
Not open source	Not open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Sources for Happy Hues happyhues.co Catalog checked September 22, 2026	Official website Full listing and sources Sources for UI Colors uicolors.app Catalog checked September 23, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.