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Atmos vs Accessible Palette: catalog facts
Atmos	Accessible Palette
Freemium Free to start; an account login is offered for further use.	Free Free to use in the browser; no paid tier is mentioned on the page.
Web	Web
Uniform shade and scale generation Semantic status colors from a primary color	Consistent perceived lightness across hues Shows WCAG 2 and WCAG 3 contrast for each step
Browser only Some features may need an account	Assumes familiarity with LCh values Developer and export options are not described on the page
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	Not stated if it works offline
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.