♿ Contrast Checker
Open Interactive ToolCheck color contrast ratios for WCAG accessibility compliance.
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What Is Contrast Checker?
Check color contrast ratios for WCAG accessibility compliance.
The Web Content Accessibility Guidelines (WCAG 2.1) require a minimum contrast ratio of 4.5:1 for normal text (Level AA) and 7:1 for enhanced (Level AAA). Large text (18px+ bold or 24px+ normal) has a reduced requirement of 3:1. Low contrast is one of the most common accessibility violations, affecting users with low vision and aging eyes.
How To Use Contrast Checker
- Open the Contrast Checker workspace.
- Type, paste, upload, or adjust the input fields as needed.
- Run the action or conversion to get instant results in your browser.
- Copy, download, or reuse the output without sending your data to a server.
Why Use Contrast Checker?
- Check any color combination against WCAG 2.1 AA and AAA standards
- Get real-time contrast ratio calculations
- Ensure your website is accessible to users with visual impairments
Who Uses Contrast Checker?
Web developers, accessibility consultants, designers, and compliance teams ensuring websites meet legal accessibility requirements.
Frequently Asked Questions
What is a good contrast ratio?
WCAG 2.1 Level AA requires a minimum of 4.5:1 for normal text and 3:1 for large text. Level AAA (enhanced accessibility) requires 7:1 and 4.5:1 respectively. Aim for at least AA compliance on all text.
How do I use Contrast Checker online?
Open Tooliest's Contrast Checker, enter your input, and run the tool. Check color contrast ratios for WCAG accessibility compliance. Results are generated instantly in your browser with no signup required.
Is Contrast Checker safe for sensitive data?
Yes. Tooliest runs Contrast Checker client-side in your browser, so your input is not uploaded to a remote server for processing. That makes it a practical option when privacy matters.