Here's why people saw the dress differently. 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 TheDress one year on eight things we learned from the viral phenomenon Social media The Guardian 78,028 Black Blue Dress Meme Royalty Free Images, Stock Photos & Pictures Shutterstock I inadvertently created a new blue black white gold dress meme situation : r opticalillusions