That's what everything is other than the colours we see. Infrared and ultraviolet light literally mean below red and beyond violet. That's where things like infrared and ultraviolet light come from. They're light, but we can't see it. However we can feel ultraviolet light, which comes from the sun. Everything is just waves moving through the air at different frequencies, and colour is just a small portion of those frequencies.
https://en.wikipedia.org/wiki/Vantablack