QR Code Color Contrast Checker
Verify your QR code color combinations for scannability. Check contrast ratios between foreground and background colors, get instant recommendations, and generate QR codes with validated colors.
Contrast Ratio: 21.00:1
✓ ExcellentPerfect! This color combination provides excellent contrast for reliable QR code scanning in all conditions.
QR Code Contrast Standards
Contrast Ratio Guidelines
✅ Excellent (5:1 or higher)
Optimal contrast for reliable scanning in all conditions. Recommended for professional use and critical applications.
⚠️ Acceptable (3:1 to 5:1)
Minimum acceptable contrast. Works in good lighting conditions. Test thoroughly before mass printing.
❌ Poor (Below 3:1)
Insufficient contrast. High risk of scanning failures. Not recommended for any use.
Color Best Practices
✅ Dark on Light
Black or dark QR codes on white or light backgrounds provide maximum contrast and reliability. This is the industry standard.
✅ High Contrast Colors
Navy blue on white, dark purple on cream, or black on light gray all work well. Ensure foreground is significantly darker.
❌ Avoid Light on Dark
White or light QR codes on dark backgrounds (inverted) often fail to scan. Many scanners expect dark-on-light patterns.
❌ Avoid Low Contrast
Yellow on white, light gray on white, or pastel colors on white backgrounds don't scan reliably.
❌ Avoid Problematic Combinations
Red/green combinations cause issues for colorblind users. Orange, red, and yellow QR codes often fail. Stick to dark, cool colors.
Create QR Codes with Validated Colors
Generate QR codes with optimal color combinations
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