It’s unlikely that you knew that not all color shades can be applied to QR codes. The fact is that if you create a QR code that is too light, the QR scanner may not recognize it. A very bright code can distract the user or look suspicious.
Choose a simple and eye-pleasing color for your QR code. Familiar shades of blue, green, red, and classic black and white colors are the best options. It’s also important to choose the optimal contrast of shades so that your code has clear boundaries and thus efficient scanning is ensured.