Visible light is produced when electromagnetic radiation falls within the range that is visible to the human eye. The wavelengths related to this range start from approximately 380 nanometers in the violet to about 750 nanometers in the red.
Light is a wave that also behaves as a particle, which is known as a photon. It comprises several wavelengths, and each has a particular color. The color viewed by the eye is a reflection of specific wavelengths.
Visible light is only a small portion within the electromagnetic spectrum to which the human eye is sensitive.
White light comprises all colors of in the light spectrum. For instance, light from the sun is an example of white light.
On the other hand, monochromatic light produces comprises only one color. Examples include light from a laser.
The color of objects that the human eye sees depends on the wavelengths that the objects absorb and those they reflect. For instance, a blue shirt appears blue to the eye because the dye molecules within the fabric absorb the light wavelengths from the red end of the spectrum and reflect light from the blue end. The shirt appears black if only blue light is shining on it.