In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color The dress is black & blue, but here's why you can't tell TJ Kelly Blue black or white gold? The dress debate is over Internet debates that blue dress (it is blue, right?) The Seattle Times Blue and Black or Gold and White Dress Imgflip 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