Image & SVG
Contrast Checker
Check WCAG text contrast ratios between foreground and background colors locally.
Runs locally in your browser
Readable interface textContrast ratio 17.74:1
Ratio17.74:1
Text color#111827 · rgb(17, 24, 39)
Background#FFFFFF · rgb(255, 255, 255)
AA normal textPass
AA large textPass
AAA normal textPass
AAA large textPass
How to use this tool
Paste or type your input into the tool panel. Results update immediately where possible. For privacy-first tools, your input is processed locally in the browser and is not stored for analytics.
FAQ
Is this tool free?
Yes. Lumio Utils starts with free browser-based tools and does not require registration.
Do you store my input?
No tool inputs, file contents, passwords, or private generated outputs are stored for analytics.