7.2. Make sure that colours are not the only method for conveying information
Do not use colour to convey information on its own. It is preferable to use other ways apart from colour or a comparable method. This applies to text, and images, and rich content.
Tip
As a first step, you can test this point by imagining the page printed in black and white, to see if all the information remains comprehensible.
As a first step, you can test this point by imagining the page printed in black and white, to see if all the information remains comprehensible.
In the first example, the information in the pie chart can only be understood by associating a colour with the corresponding segment of the pie chart. The second version can be understood even if the colours are removed.
Warning
If images or rich content contains information that is conveyed only by colour are supplied for publication, they should be returned to the contributor so that a new optimised version is obtained.
If images or rich content contains information that is conveyed only by colour are supplied for publication, they should be returned to the contributor so that a new optimised version is obtained.