How to optimise the use of colours?

  • Colours portray the right meaning (red is bad, green is good, etc.)
  • Don’t use too many colours. Beyond around 7 to 8 hues, it’s hard to tell them apart
  • The colours are different enough in hue/saturation/brightness so that you can tell them apart even when they’re shown close to each other
  • Have enough contrast not only between your chart colours, but also between chart colours and the background colour of the canvas/the dashboard
  • The sum of your dashboard items look like one harmonious dashboard
  • Test your design with users!