10 years ago, a simple photograph of a dress sparked a global debate unlike anything seen online before. Posted in 2015, the image caused people to argue intensely over whether the dress 10 years ago today, this dress was posted online, turning into a viral phenomenon. Viewers couldn't decide if the dress was blue and black, or white and gold. It was later confirmed How To See #TheDress Black and Blue theblackandbluedress 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? : r opticalillusions