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 White & Gold Dresses Collection Lady Black Tie Dressgate: If you saw THAT dress as white your brain was working overtime The Truth About the Dress: Black and Blue Explained How "The Dress" Became an Illusion Unlike Any Other Scientific American Is That Dress White and Gold or Blue and Black? The New York Times