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彩色二维码 at a glance
- Custom foreground and background colours
- Dark pattern on a light background scans best
- Contrast ratio matters more than the hue
- Inverted codes are unreliable on many scanners
How to use the 彩色二维码
- Pick your foreground and background colours, keeping the pattern clearly darker than the background.
- Check the preview — if the contrast looks marginal on screen, it will fail in print.
- Test the downloaded file on several phones in ordinary lighting.
Where it is used
- Brand-matched campaign material
- Packaging that must fit a colour scheme
- Event collateral with house colours
Frequently asked questions
Can I invert the colours — light pattern on dark?
Some scanners handle it and many do not. If you must, test extensively across devices before printing a run.
Which colour combinations fail most often?
Low-contrast pairings such as mid-blue on mid-green, and any light foreground. Keep the pattern dark and the background light.
Does colour affect print?
Yes. Convert to CMYK and proof it — colours that look fine on screen can lose contrast on press.