Selecting the appropriate colours for your barcodes is vital for enhancing the effectiveness and precision of the scanning process. By choosing the best barcode colours, you ensure that barcodes are easily readable by scanners, minimising errors and expediting the scanning. This article delves into why optimal barcode colours matter and the key considerations for achieving efficient scanning. 

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

Importance of Choosing Optimal Barcode Colours

Choosing the right colours for your barcodes is crucial to ensure they stand out against their background and can be scanned swiftly and accurately. High-contrast combinations, like black on white or white on black, are ideal as they facilitate easy readability for scanners. Conversely, colours that are too similar may cause scanning errors and slowdowns, as scanners may struggle to distinguish the barcode from its background. Additionally, optimal barcode colours must remain legible under varying lighting conditions. For instance, in low-light environments, high-contrast colours enhance scanning accuracy, whereas overly bright or reflective colours might create glare, hindering the scanner's ability to read the barcode.

Can My Barcode Have a Coloured Background? 

Yes, your barcode can have a coloured background, provided a light colour is used to maintain high contrast with the black bars. Avoid black backgrounds as scanners cannot detect the white 'quiet zones' on the sides.

While the optimal combination is black bars on a white background, other combinations may also work. Not all colours are suitable, though. 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 Barcode1 UK.