How "The Dress" Became an Illusion Unlike Any Other Scientific American 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 today, this dress was posted online, turning into a viral phenomenon. Viewers couldn't decide if the dress was blue and black, or white and gold. It was later confirmed Black and Dark Blue Illusion Neckline Jumper Skirt Butterfly Princess Dress Puff Skirt Six ways the blue and black dress scrambles your brain ABC adelaide Australian Broadcasting Corporation