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Chroma.js Color Palette Helper vs ColorBrewer: catalog facts
Chroma.js Color Palette Helper	ColorBrewer
Free Free to use in the browser.	Free Free to use in the browser.
Web	Web
Focuses on perceptually balanced color steps Checks palettes for colorblind safety	Filters for colorblind safe, print and photocopy safe schemes Map preview with context layers
Specialised for data visualization rather than UI themes Plain interface with little guidance	Limited to its curated set of schemes Interface is aimed at cartography rather than general design
Web application	Web application
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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