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Pinwheel vs Accessible Palette: catalog facts
Pinwheel	Accessible Palette
Paid $9 USD plus tax, with a 30-day free trial.	Free Free to use in the browser; no paid tier is mentioned on the page.
macOS	Web
OKLCH and OKLAB gradients without muddy midpoints Automated contrast testing	Consistent perceived lightness across hues Shows WCAG 2 and WCAG 3 contrast for each step
macOS 15 or later only Paid after the trial	Assumes familiarity with LCh values Developer and export options are not described on the page
Downloadable app	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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