Is the Color Contrast Checker tool completely free?

Yes, the Color Contrast Checker tool is 100% free to use. There are no hidden fees, no watermarks on the free tier, and you don't need to register an account to process your files.

Are my files safe when using Color Contrast Checker?

Absolutely. All processing for the Color Contrast Checker tool happens directly inside your web browser. Your files are never uploaded to our servers, meaning nobody else can ever see or access your sensitive data.

How exactly does Color Contrast Checker work?

Free online Color Contrast Checker tool. Private, secure, and client-side. Our tool uses advanced WebAssembly technology to perform these complex operations directly on your device CPU and RAM, which makes it incredibly fast and completely secure.

Does this work on mobile devices?

Yes! Our tools are fully responsive and work on iOS and Android devices directly in Safari or Chrome, without needing to download a separate app.

Color Contrast Checker

Test foreground and background combinations against WCAG AA and AAA accessibility standards.

Inputs

Text Color (Foreground):

Background Color:

Sample Text

This box renders your exact text (foreground) and background color setup.

1:1

WCAG Requirements

WCAG AA Normal Text

Requires 4.5:1 ratio

WCAG AAA Normal Text

Requires 7.0:1 ratio

WCAG AA Large Text (18pt+)

Requires 3.0:1 ratio

WCAG AAA Large Text (18pt+)

Requires 4.5:1 ratio

How to use Color Contrast Checker

Input Data

Enter or paste your text or data into the input area above to begin using the Color Contrast Checker utility.

Configure Options

Configure the tool options exactly how you want them. Every setting is applied instantly so you can preview the outcome.

Process Locally

Click the button to instantly process your data. All Color Contrast Checker operations happen locally in your browser for maximum privacy and speed.

Copy/View Result

Share your results or instantly copy the generated output to your clipboard. No account or registration is required to use this utility!

No Tracking

Your inputs are never logged.

100% Private

Everything runs entirely in your browser.

Instant Results

Zero latency, no wait times or queues.

Frequently Asked Questions

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