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Leonardo vs Pinwheel: catalog facts
Leonardo	Pinwheel
Free Free to use in the browser, with source published on GitHub.	Paid $9 USD plus tax, with a 30-day free trial.
Web	macOS
Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick	OKLCH and OKLAB gradients without muddy midpoints Automated contrast testing
Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning	macOS 15 or later only Paid after the trial
Web application	Downloadable app
Open source	Closed 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	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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