三色视觉是指眼睛能通过三种不同类型的视锥细胞看到事物的颜色[1]具有三色视觉的生物被称为三色视者。人类和其他一些与人类物种上较为接近的哺乳动物(例如狭鼻小目阔鼻小目物种)以及一些有袋类物种是三色视者[2]。鱼类和鸟类是四色视觉者。[3][4]

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