When it comes to barcode scanning, choosing the right colours for your barcodes can make a significant difference in the efficiency and accuracy of the scanning process. Optimal barcode colours can help ensure that barcodes are easily readable by scanners, reducing the risk of errors and speeding up the scanning process. In this article, we will explore the importance of choosing optimal barcode colours and the factors to consider for efficient scanning. 

The above images shows examples of acceptable barcode colour combinations (these barcodes can be easily scanned and decoded by a barcode scanner).

Importance of Choosing Optimal Barcode Colours

Selecting the correct colours for your barcodes is key to making sure they stand out against their background and can be scanned swiftly and accurately. Typically, the best barcode colours are those that have a high contrast, such as black on white or white on black, which makes it simple for scanners to read the barcode. Using colours that are too similar can result in scanning errors and delays because scanners might find it challenging to distinguish between the barcode and its background. Additionally, choosing optimal barcode colours is vital for readability in varying lighting conditions. For example, if a barcode is scanned in dim light, using colours that offer good contrast can enhance scanning accuracy. Conversely, overly bright or reflective colours can cause glare, making it difficult for scanners to read the barcode. 

Can My Barcode Have a Coloured Background? 

Yes, you can print your barcode with a coloured background, but it's important to use a light colour to ensure high contrast between the black bars and the background. Avoid using black as the background since scanners cannot detect the left and right white ‘quiet zones’.

The best combination is black bars on a white background, but some other colour combinations can also work. However, not all colours are suitable. Here are some guidelines:

White and warm colours (yellow and red) are invisible to barcode scanners, making them appropriate for the barcode background.

Black and cold colours (blue, purple, green, and dark brown) are visible to barcode scanners, making them suitable for the vertical barcode bars.

Contrast is crucial. The vertical bars should be printed in a darker colour than the background to ensure readability. We recommend testing your printed barcode label with different barcode scanners to ensure it is easily readable, as scanners can vary slightly in their colour calibrations.

By selecting high-contrast colour combinations, considering lighting conditions, and taking into account the requirements of the scanning technology being used, you can help ensure that your barcodes are easily readable and can be scanned quickly and accurately.

For more information about barcode colours (as well as barcode dimensions and placement) please visit Canada Barcodes.