Are chimpanzees color blind

It depends what you consider colorblind, and which monkeys you're interested in. All primates have some color vision--that is, they are at least dichromatic. Dichromats can see some colors but are blind to certain distinctions, usually the difference between red and green. Some new world monkeys only have dichromatic vision. Other new world monkeys as well as all old world monkeys and apes have trichromatic vision and can make all the color distinctions that humans with normal color vision can make.