There are four types of colored contact lenses: visibility tints, enhancement tints, opaque color tints and light-filtering tints.

In visibility tint color contacts, a light blue or green tint is added to the lens, to help see the lens better. The tint is usually too light to change the eye color.

An enhancement tint is darker than a visibility tint. It is used to enhance the existing color of the eye, and works best on people who have naturally light-colored eyes.

Colored tints go further and can altogether change the color of the user