Puzzle lovers are straining their brains over this optical illusion, which reportedly fools the viewer into thinking that they have gone colorblind.
In the image, created by Japanese psychologist Akiyoshi Kitaoka, a small square can be seen traveling across a rectangle that’s half pink and half blue with a blended combo of the colors in between.
The quadrilateral appears gray while moving in the pink space, then seemingly adopts a pink hue when in the blue.
However, as Kitaoka explains in the caption, while the “moving square appears to change in color” its pigment is actually “constant.”
According to a 2016 study in the journal “Nature”, your mind makes an assumption about the color of the moving object based on the objects surrounding it. In turn, this proves that our perception of color is subjective.
Can you solve this brain-busting optical illusion?