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Leonardo vs Accessible Palette: catalog facts
Leonardo	Accessible Palette
Free Free to use in the browser, with source published on GitHub.	Free Free to use in the browser; no paid tier is mentioned on the page.
Web	Web
Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick	Consistent perceived lightness across hues Shows WCAG 2 and WCAG 3 contrast for each step
Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning	Assumes familiarity with LCh values Developer and export options are not described on the page
Web application	Web application
Open source	Closed 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 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.