Head-to-head · Color Contrast Checker Software
WebAIM Contrast Checker vs Colors on the Web Contrast Checker
WebAIM Contrast Checker leads on 0 checks, Colors on the Web Contrast Checker on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreWebAIM Contrast Checker · 9.1/10
- Free planboth
WebAIM Contrast Checker scores higher on our rubric for color contrast checker software: 9.1 against 7.8 out of 10; our editors rank them #1 and #7.
On contrast modes, Colors on the Web Contrast Checker gives you Text, graphics and UI where WebAIM Contrast Checker offers Text and graphics.
WebAIM Contrast Checker is the better fit for teams needing a free checker and basic API. Colors on the Web Contrast Checker is the better fit for people checking individual color combinations.
- WebAIM Contrast Checker fits best
Teams needing a free checker and basic API
- Colors on the Web Contrast Checker fits best
People checking individual color combinations
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Side by side
| Feature | WebAIM Contrast Checker 9.1/10 Visit ↗ | Colors on the Web Contrast Checker 7.8/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 9.1 | 7.8 |
| Ranking | #1 in Color Contrast Checker Software | #7 in Color Contrast Checker Software |
| Best for | Teams needing a free checker and basic API | People checking individual color combinations |
| Pricing model | Free | Free |
| Starting price | Free plan | Free |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Cloud, Browser extension | Cloud |
| Platforms | Web | Web |
| Built for | Solo, Small business, Mid-market, Enterprise | Solo, Small business |
| Features WebAIM Contrast Checker 1/2 · Colors on the Web Contrast Checker 1/2 | ||
| Contrast suggestions | ✓ | ✓ |
| Batch color-pair checks | — | Not checked yet |
| Specs | ||
| WCAG standards | Not checked yet | 2.2 |
| Contrast modes | Text and graphics | Text, graphics and UI |
| Design integrations | Not checked yet | Not checked yet |
| Platforms | web, api | web |
| Our review | ||
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| Cons |
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| Our verdict | WebAIM Contrast Checker is a browser-based tool for evaluating foreground and background color contrast. It suits designers, developers, and accessibility teams who need to assess text and interface colors without paying for a checker.… Read the review → |
Colors on the Web Contrast Checker is a free browser-based tool for people who need to assess individual foreground and background color combinations. It checks text, UI components, and graphics against WCAG 2.1 and 2.2 AA and AAA… Read the review → |
Strengths and trade-offs
WebAIM Contrast Checker — where it wins
- Checks text and graphical/UI contrast with WCAG AA and AAA results
- Color picker, alpha adjustment, and lightness sliders aid color exploration
- Basic API and bookmarklet extend checking beyond the main web tool
Where it doesn't
- Evaluates one foreground/background color pair at a time
- Published WCAG coverage is 2.0 and 2.1, not 2.2
- API is described as basic rather than a broader integration suite
Colors on the Web Contrast Checker — where it wins
- Checks text, UI, and graphics against WCAG 2.1 and 2.2 AA and AAA requirements
- Suggests calculated color adjustments and AI-powered alternatives
- Includes text previews, color-vision simulation, and shareable links
Where it doesn't
- Evaluates one foreground/background combination at a time
- Does not determine whether an entire website conforms to WCAG
- Available as a web tool rather than a desktop or mobile app
- WebAIM Contrast Checker9.1/10 · Free plan
A free web checker for text and UI contrast, with a basic API and bookmarklet.
Visit WebAIMFull verdict → - Colors on the Web Contrast Checker7.8/10 · Free plan
A free web checker for evaluating individual text, graphics, and UI color combinations.
Visit siteFull verdict →
More comparisons
- WebAIM Contrast Checker vs Acquia Color Contrast Checker (formerly Monsido Contrast Checker)
- WebAIM Contrast Checker vs Silktide Color Contrast Checker
- WebAIM Contrast Checker vs Colour Contrast Analyser (CCA)
- WebAIM Contrast Checker vs Figma
- WebAIM Contrast Checker vs Color Contrast
- WebAIM Contrast Checker vs Accessibility.build Desktop
- Acquia Color Contrast Checker (formerly Monsido Contrast Checker) vs Colors on the Web Contrast Checker
- Silktide Color Contrast Checker vs Colors on the Web Contrast Checker
All color contrast checker software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update