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 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 B. DARLIN GREEN VELVET PARTY DRESS 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