OnThisDay Ten years ago a great dress color debate was born! The dress became a viral phenomenon in 2015 with social media torn on whether the dress was blue and black or Knee Length Backless Royal Blue Satin Homecoming Dress With Appliques US16 Custom Color How I Flipped My Brain's View of the Black and Blue Dress Jeff Greenhouse The little blue (or white) dress that tore us apart The Boston Globe 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 Black Applique Royal Blue Unique Knee Length Cheap Homecoming Dresses, BubbleGowns