The dress is black & blue, but here's why you can't tell TJ Kelly Sexy Black Prom Dress, Prom Dresses, Evening Gown, Graduation School P DressesTailor Queendancer Women Elegant Black Formal Dress with Slit Sheath High Neck Ruffled Black Tie Dress queendancer 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