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APCA Contrast Calculator vs Color Review: catalog facts
APCA Contrast Calculator	Color Review
Free Free to use in the browser.	Free Free to use in the browser with no paid tier shown.
Web	Web
Polarity aware, handling dark mode separately Shows contrast relative to font size and weight	Edit colors in hex, RGB, HSL, HSV or CMYK Live preview of body text and headlines
APCA is not yet a published WCAG requirement Results are not the same as WCAG 2 contrast ratios	Checks one color pair at a time Requires a browser and connection
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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