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Eva Colors vs ColorBox: catalog facts
Eva Colors	ColorBox
Best for: Setting up a color palette for a UI design system	Best for: Designers building color scales for a design system
Free Free to use in the browser.	Free Free to use in the browser; no paid tier is shown on the page.
Web	Web
Generates a full palette rather than single colors Runs in the browser with nothing to install All 3 strengths for Eva Colors Generates a full palette rather than single colors Runs in the browser with nothing to install Tied to an existing design system	Fine control over each channel with easing curves Shows contrast ratios for every step All 3 strengths for ColorBox Fine control over each channel with easing curves Shows contrast ratios for every step Exports to Tailwind CSS, OKLCH and Swift
Very little documentation on the page Generated palettes follow the Eva Design System approach	Curve-based controls take some learning Aimed at systematic scales rather than quick inspiration
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	Not stated if it works offline
Official website Full listing and sources Sources for Eva Colors colors.eva.design Catalog checked October 1, 2026	Official website Full listing and sources Sources for ColorBox colorbox.io Catalog checked September 23, 2026

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