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Coolors vs Atmos: catalog facts
Coolors	Atmos
Freemium Free to use with a paid plan for extra features.	Freemium Free to start; an account login is offered for further use.
Web	Web
Very fast palette generation with keyboard shortcuts Large community of shared palettes to browse	Uniform shade and scale generation Semantic status colors from a primary color
Some features are locked behind a paid plan Web-based only, no offline desktop app	Browser only Some features may need an account
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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