WCAG Contrast Checker
Check WCAG 2.1 AA/AAA color contrast
Contrast Ratio
AA Normal Text
✓ Pass (min 4.5:1)
AA Large Text
✓ Pass (min 3:1)
AAA Normal Text
✓ Pass (min 7:1)
AAA Large Text
✓ Pass (min 4.5:1)
About WCAG Contrast Checker
ToolNest's WCAG Contrast Checker lets you check color contrast quickly and easily, right in your browser. Whether you're a professional, student, or casual user, this tool is designed to save you time and effort.
All processing happens locally in your browser — your data is never uploaded to any server, ensuring complete privacy and security. There's no signup required, no software to install, and no limits on usage.
This tool is part of our Accessibility collection, offering free web accessibility testing and reference utilities. It's optimized for speed and works on any device — desktop, tablet, or mobile. You might also find Font Size Checker and Alt Text Generator useful for your workflow.
Common use cases include professional workflows, personal projects, educational tasks, and quick one-off conversions. The tool handles a wide range of inputs and produces high-quality results every time.
How to Use WCAG Contrast Checker
- 1
Open the tool
Navigate to the WCAG Contrast Checker tool on ToolNest or search for it using the search bar.
- 2
Provide your input
Enter your data, upload your file, or configure the settings as needed.
- 3
Configure options
Adjust any available settings or parameters to match your requirements.
- 4
Process
Click the action button to process your input. Results appear instantly.
Frequently Asked Questions
Is WCAG Contrast Checker free to use?
Is my data safe when using WCAG Contrast Checker?
Does WCAG Contrast Checker work on mobile devices?
Do I need to install anything to use WCAG Contrast Checker?
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