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Geenes vs Leonardo: catalog facts
Geenes	Leonardo
Free Free to use in the browser; no paid plan is mentioned.	Free Free to use in the browser, with source published on GitHub.
Web	Web
Builds whole color scales from hue and saturation curves Exports palettes to Sketch or code	Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick
Little public documentation about the tool Export targets are limited to Sketch and code	Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning
Web application	Web application
Closed source	Open source
License not stated	License not stated
Not stated if an account is 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 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.