Question

What is the relationship between the frequency of light and its color?

Answer 1

Light energy is a form of electromagnetic radiation and is found in a segment of the (EM) electromagnetic spectrum.
red= lowest frequency
blue and violet= highes frequency
The EM spectrum encompasses the entire range of ionizing and non-ionizing radiation extending in frequency from approximately 1023 hertz to 0 hertz, or in corresponding wavelengths, from 10-13 centimeter to infinity.

This spectrum includes all forms of classical non-ionizing radiation we are familiar with including ultraviolet light, VISIBLE LIGHT, infrared (light) radiation, microwaves, and radio waves. The spectrum also includes ionizing radiation such as cosmic-ray photons, gamma rays, x-rays.

At eithe end of the visible light spectrum is infared and ultraviolet light and humans cannot perceive these spectrums of light. Red colored light is longer wavelength of light and visible violet light is shorter wavelength.

For a cool chart and more in depth descriptin of the EM spectrum check out the Goddard Space Center's special page on this topic.