White and gold or blue and black? What colour is the dress? London Evening Standard The Standard 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 perception 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. The infamous "black & blue" dress debate is back with new evidence