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Data Color Picker vs Leonardo: catalog facts
Data Color Picker	Leonardo
Best for: Analysts and designers choosing colors for charts and dashboards	Best for: Designers and developers building accessible color systems for interfaces and charts
Free Free web tool from Learn UI Design, which also sells design courses.	Free Free to use in the browser, with source published on GitHub.
Web	Web
Palette, single-hue and divergent modes Preview on light or dark backgrounds All 3 strengths for Data Color Picker Palette, single-hue and divergent modes Preview on light or dark backgrounds Copy HEX values or export as SVG	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 eight colors per palette Focused on data visualization rather than general UI palettes	Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning
Web application	Web application
Not 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 Data Color Picker learnui.design/tools/data-color-picker.html Catalog checked September 24, 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.