3D Flowers Illusion Neck Steel Blue Formal Dress Xdressy 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 Glamorous Gold Floral Sequin Prom Dress with Criss Cross Back FancyVestido Anny Lee Blue Sapphire Gold Embroidered Mercari The Science Behind the Dress The New York Times