What are the best practices for QR code contrast and color?

Created by Alex Stansfield, Modified on Fri, 9 May at 3:55 PM by Alex Stansfield

Designing a QR code that looks great is one thing — but it also needs to work reliably when scanned. Here are our top tips to help you create QR codes that are both stylish and scannable.

1. Maintain strong contrast

The most important rule for scannability is high contrast between the QR code and its background:

Dark pattern on a light background works best.
Avoid light-colored patterns (e.g. yellow on white) — these are hard for most scanners to detect.
If you use a custom color, test it to make sure it still scans well.

2. Use the built-in preview

When customizing a QR code in ConnectQR, you’ll see a live preview that updates as you change shapes, corners, or colors. Use this to test visibility and make sure your design is easy to read.

3. Stick to supported shapes

We offer multiple pattern and corner styles, but all are tested for readability. You’re free to experiment — just make sure the resulting design stays clear and doesn’t obscure key areas of the QR grid.

4. Add logos responsibly

Want to add a logo in the center of your QR code? Go for it! ConnectQR uses a high level of error correction so even if part of the code is covered (like the center), it should still scan reliably.

Just don’t cover the corners or outer alignment marks — those are essential for scanners.
Try to use logos with transparent backgrounds to keep the code clean.

5. Avoid visual clutter

Too many effects, patterns, or decorations can make it hard for devices to recognize the QR code structure. Keep it simple and test often.

6. Always test before publishing

After designing your QR code, we strongly recommend scanning it with multiple devices before printing or sharing it widely.

Test it with Android and iOS phones
Try different scanning apps and camera apps
Print a sample if you’re using it on physical media

Quick checklist before you publish

✅ Dark pattern on a light background
✅ Corners and alignment zones are visible
✅ Logo (if used) is centered and doesn’t interfere with critical areas
✅ Code looks sharp when printed or resized
✅ You’ve tested it on multiple devices

Need help?

If you're unsure whether your QR code is scannable or have questions about design options, our support team is here to help!