The dress is back: Are these flip flops black and blue? Express.co.uk 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 How "The Dress" Became an Illusion Unlike Any Other Scientific American Eleven years ago today, an image of a dress posted on Tumblr, a social networking platform, ignited a global online debate over whether it was white and gold or blue and black. Natural Stretch Light Blue Diamond Weave Custom Dress Shirt Black Lapel The dress' went viral 10 years ago and taught us the science of color