"The colours we see are the reflected light of objects not the actual colour of the objects. We see in RGB so a yellow banana is actually blue," explains Sydney-based designer Nick Barclay.
In his latest series, following his usual trademark minimalist style, he considers how we perceive colour and translates his findings into simple graphical posters.
He adds: "Red, blue and green light hits the object and the blue light is absorbed and the red and green light is reflected. Red and green make yellow so that why we see a banana as yellow when it is actually blue
"It's a little hard to get your head around at first but I have simplified it so that people can understand and I have used objects that everyone can associate with a colour."