What Color Is This Dress and Why Does It Matter? Parade Ten years ago, a photo of a dress posted on Tumblr sparked a massive debate: was it blue and black or white and gold? Millions argued online, and even celebrities joined in. Scientists later explained Luuvis Women Lovely Yellow Mermaid Long Glitter Prom Party Dress with Appliques Yellow Sequin V Neck Lace Up Back Long Prom Dress with Slit Dreamdressy Eleven years ago today, an image of a dress posted on Tumblr, a social networking platform, ignited a global online debate over whether it was white and gold or blue and black.