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 Viral online dress debate turns 10. What colours do you see? 10 years since THE DRESS blew up Internet. Two thirds of people saw white and gold. Its an optical illusion caused by weird lighting and an overexposed background. It Is actuallylly blue and black. How "The Dress" Became an Illusion Unlike Any Other Scientific American Yellow Dress Original Gold And White Black And Blue Optical Illusion: Dress Colour Debate Goes Global The Internet is obsessed with one question: Is this dress gold or blue?