The dress was black and blue, but the conditions of the photograph caused many to perceive it as white and gold, creating debate. Within a week, more than ten million tweets had Is This Dress Blue And Black Or White And Gold? Here's What The Experts Say Decoding the Science Behind the Blue & Black Dress 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