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 Blue Dresses Navy, Royal & Satin Formal Styles Lady Black Tie Jenna Bush Hager Wears Viral Internet Dress 10 Years After Debate Us Weekly Black and Blue or White and Gold Dress Costume Theme Me: Costume, Fancy Dress & Theme Inspiration 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 Sherri Hill 57851 Dress Sherri Hill Dresses Formal Approach 0 Pink Blue Ombre