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 Black and Blue or Gold and White Explained TikTok Optical illusion: Dress colour debate goes global BBC News The science behind the dress colour illusion Internet The Guardian Is That Dress White and Gold or Blue and Black? The New York Times Original Black Blue And Gold Dress Illusion The White And Gold (No, Blue And Black!)