What Is Color Contrast Checker?
Check WCAG contrast ratio between two colors for accessible design. It is part of the Image Tools group on ZakGT Tools — a free, browser-based utility that requires no installation or login. Whether you are a developer, designer, content creator or student, Color Contrast Checker saves you valuable time every day.
Key Features of Color Contrast Checker
- Works entirely in your browser — no data is sent to any server
- Instant real-time results as you type
- Copy-to-clipboard with a single click
- Works on desktop, tablet and mobile
- Zero cost — completely free, forever
How to Get Started
Open Color Contrast Checker in your browser. Paste or type your input into the input field. The tool processes your data instantly and displays the result. Click the copy button to copy the output to your clipboard and paste it anywhere.
Color Contrast Checker includes several advanced options designed for power users. You can customise output format, toggle between modes and adjust precision settings depending on the task at hand. These settings are remembered between sessions via browser localStorage so your preferences are always saved.
Privacy & Security
All processing happens 100% in your browser using JavaScript. No data ever leaves your device. This makes Color Contrast Checker safe for sensitive data including passwords, API keys and confidential documents.
Supported Browsers
Color Contrast Checker works in all modern browsers including Chrome, Firefox, Safari, Edge and Opera. JavaScript must be enabled. For the best experience, use the latest version of your preferred browser.
Frequently Asked Questions
Is Color Contrast Checker free? Yes, completely free with no limits or sign-up required.
Is my data safe? Yes. All processing is done client-side in your browser.
Can I use it on mobile? Yes, the interface is fully responsive.
Related Tools
Browse the full Image Tools collection for more free utilities. All tools on ZakGT Tools are free and browser-based, designed to make your workflow faster and more efficient.
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Check WCAG contrast ratio between two colors for accessible design
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