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 Is This Dress Blue And Black Or White And Gold? Here's What The Experts Say The dress that divided the internet IS blue and black Daily Mail Online Backless Bright Gold Sequin Mermaid Formal Dress Xdressy The Science of Why No One Agrees on the Color of This Dress WIRED