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 Is This Dress Blue And Black Or White And Gold? Here's What The Experts Say Purple and gold dress Black and White Stock Photos & Images Alamy Is This Dress Blue And Black Or White And Gold? Here's What The Experts Say 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 Gold White Black Ivory Purple Size 00 Tulle Sweetheart Bridal Dresses Rachel Allan