Byte The viral dress, known as "The Dress," appeared differently to people: some saw it as blue and black, while others saw it as white and Instagram Is That Dress White and Gold or Blue and Black? The New York Times Optical illusion: Dress colour debate goes global BBC News 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