Color Contrast Checker about
Color Contrast Checker about is a practical design tool built for fast production work. Most processing happens directly in your current browser.
WCAG AA for normal text requires 4.5:1. AAA for normal text requires 7:1.
How to use
Enter the Color Contrast Checker about input, adjust the options, run the tool, then review the validated result. Downloads only start after an explicit button click.
Examples
Use Color Contrast Checker about for publishing checks, SEO preparation, development snippets, asset cleanup, and repeatable production tasks without installing desktop software. Validate foreground and background color pairs against WCAG AA and AAA thresholds.
Comparison
The live preview, ratio, and pass/fail cards make accessibility decisions visible at a glance. OneClickSite keeps input, settings, preview, and saving steps in one predictable workflow.
When to use
Use it before shipping buttons, cards, labels, hero text, and dashboard status colors.
Tips
Keep the original file or text until you compare the output, especially for client or production work. The same workflow is usable on mobile and desktop.
FAQ
What ratio should normal text pass?
WCAG AA normal text needs at least 4.5:1; AAA normal text needs at least 7:1.
Is my input uploaded to a server?
No. This tool runs in the browser and does not upload files or text to a server.
Can I use this for commercial work?
Yes. Review the output and keep your source files so you can compare results before publishing.
Does it work on mobile?
Yes. Inputs, controls, and result panels are designed for mobile and desktop use.