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What is the difference between self-hosting and MyDevTools Cloud?

Self-hosting is the same codebase running on your own infrastructure — you own the data and pay nothing to us. MyDevTools Cloud is our managed service; it is a paid subscription that covers hosting, sync, and backups.

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Google Sign-In is required to save your data across sessions. Many public tool pages can be explored before opening the full app experience.

Is this truly open source?

Yes. Full source code is available on GitHub under the GPL-3.0 license. You can audit, contribute, fork, or self-host it.

Does it work offline?

Many tools are fully client-side and can work without server processing. Tools that connect to external services, sync data, or send API requests need a network connection.

Does WCAG Contrast Checker store or upload my data?

WCAG Contrast Checker is designed for browser-based use. Many MyDevTools utilities process data locally; tools that require sync or external connections may send only the data needed for that workflow.

Do I need to install anything to use WCAG Contrast Checker?

No installation required. WCAG Contrast Checker runs directly in your web browser — just open the link and start using it.

Media & Design

Free WCAG Contrast Checker OnlineWCAG Contrast Checker on MyDevTools

Enter two colors to get WCAG 2.1 contrast ratio with AA/AAA pass/fail for normal and large text. Answers "color contrast checker", "WCAG AA contrast test", or "accessibility contrast ratio tool".

Use WCAG Contrast Checker Browse All Tools

About WCAG Contrast Checker

Measure WCAG 2.1 contrast between two HEX colors, see AA and AAA pass/fail for normal and large text, and preview typography on the background. Runs entirely in your browser — no installation, no account required to try it.

Common WCAG Contrast Checker use cases

Use WCAG Contrast Checker when you need a fast, browser-based way to work with wcag contrast. It is useful during API debugging, code reviews, documentation cleanup, test data preparation, and quick checks on a new machine where you do not want to install a desktop app. Because MyDevTools keeps related utilities together, you can move from WCAG Contrast Checker into nearby tools like formatters, converters, generators, encoders, decoders, and API helpers without leaving the same toolkit.

Example workflow

A typical workflow starts by pasting or typing your input into WCAG Contrast Checker. Review the result, copy the cleaned or generated output, then continue with a related task such as validating a payload, decoding a token, parsing a URL, generating an identifier, or testing an API request. This makes WCAG Contrast Checker part of a practical developer workflow instead of a one-off utility page.

Key Features

WCAG Contrast Checker supports wcag contrast workflows for quick browser-based developer tasks.
WCAG Contrast Checker supports contrast ratio workflows for quick browser-based developer tasks.
WCAG Contrast Checker supports aa aaa workflows for quick browser-based developer tasks.
WCAG Contrast Checker supports accessibility checker workflows for quick browser-based developer tasks.
WCAG Contrast Checker supports color contrast workflows for quick browser-based developer tasks.
WCAG Contrast Checker supports text contrast workflows for quick browser-based developer tasks.
WCAG Contrast Checker supports wcag 2.1 workflows for quick browser-based developer tasks.
Runs in your browser — no install
Free to use, always

WCAG Contrast Checker FAQ

Is WCAG Contrast Checker free to use?

Yes. WCAG Contrast Checker is available through MyDevTools with a public landing page and browser-based app experience.

Do I need to install anything for WCAG Contrast Checker?

No. WCAG Contrast Checker runs in a web browser, so you can open it from any modern device without installing a desktop utility.

What is WCAG Contrast Checker best for?

Enter two colors to get WCAG 2.1 contrast ratio with AA/AAA pass/fail for normal and large text. Answers "color contrast checker", "WCAG AA contrast test", or "accessibility contrast ratio tool".

What should I use with WCAG Contrast Checker?

Most developers pair WCAG Contrast Checker with related MyDevTools utilities such as formatters, parsers, encoders, generators, API tools, and security helpers.

How to Use WCAG Contrast Checker

01
Open the tool
Click "Use WCAG Contrast Checker Free" above — no download or account required.
02
Enter your data
Paste or type your input directly in the browser. Processing happens locally on your device.
03
Copy the result
Get your output instantly. Copy it, download it, or keep working in the same tab.

Open WCAG Contrast Checker

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