Is the dress blue or gold? The phenomenon originated in a photograph of a dress posted on Facebook in 2015. The dress was black and blue, but the conditions of the photograph 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 color theory How can the "dress" optical illusion be accurately reproduced on other images? Graphic Design Stack Exchange How Does Your State Sales Tax See That Blue and Black (or White and Gold) Dress?