This explains how the blue black white gold dress illusion was possible. But it doesn't explain why some people saw it one way and some saw it the other, and no one seemed to see What color is the dress? Why do some people see blue and black and some people see gold and white when looking at a single image of a dress? : r askscience Is it white and gold or blue and black? The truth behind the dress debate. CooperVision The Internet is obsessed with one question: Is this dress gold or blue? Is The Dress blue and black or white and gold? The answer lies in vision psychology Psychology The Guardian