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 colors are this (black & blue) dress? Clix The Dress Illusion WHITE & GOLD BLUE & BLACK YouTube The Dress: An Interactive Classroom Experiment by Andrew Robinson Precarious Physicist Medium This is how a dress of many colors blew up on the Internet Los Angeles Times The Science Behind the Dress The New York Times