Two anime girls, one wearing a black and blue dress and one wearing a white and gold dress. Each has an inset rectangular shape with a different colour background. They only look black/blue and white/gold because of the surrounding context of the image, because our brains are weird in the way they perceive colours.
https://cdn.masto.host/writing/media_attachments/files/109/966/575/455/635/584/original/02da9cb57cafd60d.png