This article explores the color taboos in Japanese culture, which have been in place for centuries. White is associated with death and mourning, black with bad luck and misfortune, red with anger or aggression, and purple with extravagance or arrogance. The reasons behind these taboos vary depending on the context in which they are used. Visitors to Japan should be aware of these taboos to avoid cultural misunderstandings and can do so by wearing muted tones or researching local customs beforehand.