Contrast Checker — Free Online Tool
Use Contrast Checker free online — no sign-up required. Fast, secure, and works in all modern browsers.
Color Selection
Contrast Ratio
17.40:1
WCAG Compliance
WCAG AA — Normal Text(min 4.5:1)
PassWCAG AA — Large Text(min 3:1)
PassWCAG AAA — Normal Text(min 7:1)
PassWCAG AAA — Large Text(min 4.5:1)
PassText Preview
Large Heading Text (24px Bold)
Large Text (18px Regular)
Normal body text at 16px — checking readability against the background.
Small text at 14px — this size requires stricter contrast standards.
Frequently Asked Questions about Contrast Checker
- Is Contrast Checker completely free?
- Yes, Contrast Checker is 100% free with no registration, no usage limits, and no hidden costs. Use it as many times as you need.
- Is my data private?
- Contrast Checker runs entirely in your browser — nothing is ever sent to our servers. Your data stays on your device at all times.
- Does it work offline?
- Once the page has loaded, Contrast Checker works fully in your browser without an internet connection.
- Can I export the generated CSS?
- Yes, click the copy button or use the copy icon to copy the generated CSS code directly to your clipboard.
- Can I use it on my phone or tablet?
- Yes, Contrast Checker is fully responsive and works on smartphones and tablets with any modern browser.
This tool runs entirely in your browser. No data is ever sent to our servers.