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ColorBrewer vs Leonardo: catalog facts
ColorBrewer	Leonardo
Best for: Cartographers and data analysts choosing colors for maps and charts	Best for: Designers and developers building accessible color systems for interfaces and charts
Free Free to use in the browser.	Free Free to use in the browser, with source published on GitHub.
Web	Web
Filters for colorblind safe, print and photocopy safe schemes Map preview with context layers All 3 strengths for ColorBrewer Filters for colorblind safe, print and photocopy safe schemes Map preview with context layers Exports to ASE, GIMP palette, JavaScript and CSS	Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick All 4 strengths for Leonardo Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick Exports CSS custom properties, Design Tokens and SVG Separate tools for data visualization scales
Limited to its curated set of schemes Interface is aimed at cartography rather than general design	Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning
Web application	Web application
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for ColorBrewer colorbrewer2.org Catalog checked September 23, 2026	Official website Full listing and sources Sources for Leonardo leonardocolor.io Catalog checked September 23, 2026

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