The visible light spectrum ranges between approximately 380 nanometers (nm) to 750 nanometers. This range includes all the wavelengths of light that are visible to the human eye.
At the lower end of the spectrum, around 380 nm, we have violet light, which has the shortest wavelength that humans can see. As we move up the spectrum, we encounter blue, green, yellow, orange, and finally red light at the upper end around 750 nm, which has the longest wavelength visible to us.
This spectrum is just a small part of the electromagnetic spectrum, which also includes radio waves, microwaves, infrared radiation, ultraviolet light, X-rays, and gamma rays. The visible light spectrum is crucial for human vision and plays a significant role in various phenomena related to light and color.