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Atmos vs ColorBox: catalog facts
Atmos	ColorBox
Freemium Free to start; an account login is offered for further use.	Free Free to use in the browser; no paid tier is shown on the page.
Web	Web
Uniform shade and scale generation Semantic status colors from a primary color	Fine control over each channel with easing curves Shows contrast ratios for every step
Browser only Some features may need an account	Curve-based controls take some learning Aimed at systematic scales rather than quick inspiration
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.