Eleven years ago, a single photo posted on Tumblr sparked one of the biggest internet debates of all time. The dress instantly divided the world, some swore it was white and gold, Black and Blue or White and Gold? How Your Brain Sees 'the Dress' Business Insider What color is the dress? Why do some people see blue and black and some people see gold and white when looking at a single image of a dress? : r askscience Ten years ago, a photo of a dress posted on Tumblr sparked a massive debate: was it blue and black or white and gold? Millions argued online, and even celebrities joined in. Scientists later explained