What are the colors of spectrum in order?

The division used by Isaac Newton, in his color wheel, was: red, orange, yellow, green, blue, indigo, and violet ; a mnemonic for this order is “Roy G. Biv”.

The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays .

White light is called as white because it consists of seven colors. The sunlight splits into seven colors namely violet, indigo, blue, green, orange, and red . We usually call it as VIBGYOR. When we mix all these colors we just get one light which is the WHITE light.