APCA Contrast Calculator vs WebAIM Contrast Checker: catalog facts
 APCA Contrast Calculator |  WebAIM Contrast Checker |
|---|
|
Free Free to use in the browser. |
Free Free to use. |
|
Web |
Web |
- Polarity aware, handling dark mode separately
- Shows contrast relative to font size and weight
|
- Separate results for normal text, large text and UI components
- Alpha and lightness controls for adjusting colors
|
- 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
- Does not scan a live page
|
|
Web application |
Web application |
|
Closed source |
Closed source |
|
License not stated |
License not stated |
|
No account needed |
No account needed |
|
Needs internet |
Not stated if it works offline |
Checked October 1, 2026 | Checked September 23, 2026 |
Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.
Copy comparison link
