Before using a diagram consider whether the message can be communicated better through text or a table, as users often find process maps and flowcharts difficult to understand. Consider whether you can reduce the complexity of the thing you are trying to convey, and work with a content designer to make sure the text is clear.
If there is a user need to provide a diagram instead of a text explanation, it must:
- have a clear starting point
- follow normal reading direction, from left to right and top to bottom
- avoid having overlapping lines or arrows
- use simple shapes
- use black and white as a default: if you do need to use colour, make sure the contrast meets WCAG AA standard (use a colour contrast checker)
- be created by the Design team in Digital Publishing
Diagrams must also follow the same guidance for using images, including as little text as possible.
All diagrams must be created by Digital Publishing. There is further guidance on how to format your information in the Data visualisation section.