Here's why people saw the dress differently. Viral online dress debate turns 10. What colours do you see? 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 Black And Gold Dress Long 10 years ago, a simple photograph of a dress sparked a global debate unlike anything seen online before. Posted in 2015, the image caused people to argue intensely over whether the dress Color Illusion Black And Gold Dress Illusion Original Optical Illusion Color Black And White Dress Or Blue And Gold The Infamous "black Blue" Dress