Colour is a dominant dimension of visual communication. When successfully used, colour is a powerful tool to communicate identities, emotions and concepts. Although we are able to discriminate millions of colours, we tend to perceive, interpret and memorise colours into a small set of colour categories. These categories named as “blue” and “yellow” for example, are formed to some extent by linguistic and cultural factors. The seminal study of Berlin and Kay proposed eleven “universal” basic colour terms but there is evidence that we can use up to fifty colour names to cover the cognitive colour space without overlaps and confusions.