QR code on a dark or colored background: what works
A QR code needs strong contrast between its dark squares and the light area around them. A dark or colored background can break that.
Here is what works and what to avoid.
Do inverted QR codes scan?
A light code on a dark background (inverted) is not read by every scanner. Many phones do read them, but older ones may not, so a standard dark-on-light code is safer.
Can I use colored QR codes?
Yes, if the dark squares are much darker than the background. Dark blue or dark green on white works. Light colors or low contrast fail.
- Always keep the white border.
- Test on two phones before you print.
What if my design is dark?
Place the code on a white or very light panel with a border, rather than printing it straight on the dark color.
Does a photo background work?
Not usually. Busy backgrounds hide the squares. Put the code on a solid panel.
Questions
What contrast do I need?
Dark squares clearly darker than the background, ideally black on white.
Can I put a logo in the middle?
Small logos can work with error correction, but they reduce reliability.
Does the border matter?
Yes. It is part of how the camera finds the code.
How do I test it?
Scan with two or three phones in the light where it will be.
What do our codes use?
Plain black on white.
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