Sweetheart Neck Short Blue Prom Dress with Black Lace Flower, Short Bl jbydress Two tone Black to Red Ombre Sequin on Mesh Fabric OneYard 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 It's been 10 years since this dress was posted. People debated which colours it was, and it was later confirmed to be black and blue.