The dress was a viral online phenomenon in 2015, centered on a photograph of a dress that people disagreed on whether it was blue and black or white and gold. Within a The actual dress was black and blue. The confusion came from how lighting and color perception tricked people's brains, making some see it as white and gold. It became a viral example 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 PDF] Blue Black or White Gold? Early Stage Processing and the Color of 'The Dress' Semantic Scholar The Dress Debate: Black & Blue or White & Gold?