The term 'Spectrum Component' refers to the four components of a COLOR spectrum: RED (3 letters), COLOR (5 letters), BLUE (4 letters), and HUE (3 letters). RED, COLOR, BLUE, and HUE are all components of the visible light spectrum, which is made up of different wavelengths of light that can be seen by the human eye. RED is the longest wavelength, followed by COLOR, BLUE, and HUE, which is the shortest wavelength. Together, these four components make up the visible light spectrum.