To provide a signaling light which can be recognized easily by the colorblind.

The signal light is composed of a first white light source 241, a second white light source 242, a third white light source 243, a first cover lens 221 transmitting light of a first wavelength spectrum from among lights emitted from the first white light source 241, a second cover lens 222 transmitting light of a second wavelength spectrum from among lights emitted from the second white light source 242, a third cover lens 223 transmitting light of a third wavelength spectrum from among lights emitted from the third white light source 243, first auxiliary light-emitting bodies 231, 231b, 231c,..., 231h emitting light of a fourth wavelength spectrum arranged at a peripheral part of the second cover lens 222, and second auxiliary light-emitting bodies 232a, 232b, 232c,..., 232h emitting light of a fifth wavelength spectrum arranged at a peripheral part of the second cover lens 222.