What type of coloration uses bright colors?

Bright colors are commonly associated with aposematic coloration, which is a type of warning coloration. This adaptation is used by certain animals, such as poison dart frogs and some insects, to signal to potential predators that they are toxic or unpalatable. The vivid hues serve as a deterrent, helping these species avoid predation. Additionally, bright colors can also be used in sexual selection, where they attract mates.