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 10 years ago, a simple photograph of a dress sparked a global debate unlike anything seen online before. Posted in 2015, the image caused people to argue intensely over whether the dress Dressgate: If you saw THAT dress as white your brain was working overtime Colors of debate Always Overdone The Dress white & gold or blue & black? Everything else Quarter To Three Forums How "The Dress" Became an Illusion Unlike Any Other Scientific American