Color Converter
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Convert colors between HEX, RGB, HSL, and HSV.
- On your device
- No signup
Private on your device
Your information stays on your device and is not uploaded.
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Enter foreground and background hex colors to compute contrast ratio and AA/AAA results for normal and large text.
How to use this tool
1. Paste or type input into the Color Contrast Checker editor. 2. Adjust format, mode, or option controls if shown. 3. Review live output or validation messages from Color Contrast Checker. 4. Fix any reported errors. 5. Copy the result when it looks correct. Processing runs on your device; inputs are not uploaded to our server.
Worked example
Example: paste a small sample input into Color Contrast Checker, run the transform or validation, and compare the output with the before text—fix any syntax errors reported before copying.
How it works
Enter foreground and background HEX colors to calculate the WCAG contrast ratio and see AA/AAA pass or fail for normal and large text. Evaluation runs on your device.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
Which standard is used?
Contrast ratios follow WCAG relative luminance guidance for AA and AAA thresholds.
Is Color Contrast Checker free?
Yes. It is free to use and you do not need to sign in or create an account.
Is my data private?
See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.
Can I use Color Contrast Checker on mobile?
Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.
Part of these workflows
This tool is one step in a longer job. Jump straight to your step or open the full workflow guide.
Related pages
- Ship a CSS UI tweak — step-by-step workflow
- Browse all free online tools on Utilnivo
- Explore more developer tools on Utilnivo
- Color Converter — Convert colors between HEX, RGB, HSL, and HSV.
- Markdown Previewer — Preview GitHub-flavored Markdown as HTML.
- JSON Formatter — Format, minify, and validate JSON with optional key sorting.
- JSON Compare — Compare two JSON documents and list structural differences.
- XML Formatter — Format, minify, and validate XML with readable indentation.
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