These monkeys have a characteristic pointed cap of fur on their head and large dark eyes that peer through a relatively small head. They are covered in dark black-brown fur all over their body except for white stripes under their limbs. These white stripes are clearly visible when the langurs sit in trees with their legs splayed for balance. 

Robinson’s banded langurs have bare skin on their lips and bright white eye rings, which distinguish them from the otherwise similar-looking Raffles’ banded langurs.

Many banded langur species bear newborns with white or light-gray fur, which is in stark contrast to the dark fur of the adults. The young one’s light fur blends with the white stripes along the inner limbs of the adults. Females carry their young across their bellies and the white and dark contrasting colors provide surprisingly good camouflage. If predators were to look up at the canopy from the ground, the white color of the baby against the dark fur of the mother blends with the bright sky above the canopy. And when aerial predators look down from the sky the mother’s fur looks like the dark forest floor.