Impossible shapes: Blue hexagon.
The impossible shape in this design is a blue shape based on a hexagon. It looks like it is possible to create, but looking into the details, you realize it is not. The shape is colored in shades of blue, from light to dark. This creates an illusion of depth and makes it pop out of the background quite nicely. Impossible shapes are optical illusions created by our brains trying to make three-dimensional sense out of a two-dimensional image. They are a bit geeky, interesting to look at, and can make simple yet strangely surreal artwork.