How I Flipped My Brain's View of the Black and Blue Dress Jeff Greenhouse In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color perception Sherri Hill 57851 Dress Sherri Hill Dresses Formal Approach 0 Pink Blue Ombre 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 The dress: Celebrities join the white and gold or blue and black debate Daily Mail Online Internet debates that blue dress (it is blue, right?) The Seattle Times