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Atmos vs UI Colors: catalog facts
Atmos	UI Colors
Freemium Free to start; an account login is offered for further use.	Freemium Free to use, with a paid Pro upgrade that unlocks extra options.
Web	Web
Uniform shade and scale generation Semantic status colors from a primary color	Generates full Tailwind shade scales from one color Previews palettes on realistic UI examples and shadcn/ui components
Browser only Some features may need an account	Some features require a Pro subscription Focused on Tailwind CSS naming and scales
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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