What is the range of frequencies of visible light?

A typical human eye will respond to wavelengths from about 390 to 700nm.

violet: 668–789 THz
indigo: 668–714 THz
blue: 606–668 THz
green: 526–606 THz
yellow: 508–526 THz
orange: 484–508 THz
red: 400–484 THz