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 White and Gold (No, Blue and Black!) Dress That Melted the Internet The New York Times Color scientists explain the dress that went viral RIT Is This Dress Blue And Black Or White And Gold? Here's What The Experts Say Here's why people saw the dress differently.