In literature, an author uses contrast when he or she describes the difference(s) between two or more entities.

Lotto has used contrast of colour in the orange and green dress to make a rich effect.

Echocardiography was also the first ultrasound subspecialty to use intravenous contrast.

This is normally as part of a double contrast technique, using positive and negative contrast.

It uses high contrast to create dark colors and shadows, much like a film noir picture.

It is characterized with a style within the divisionism, a method of painting that uses pure color, harmony and contrast.

Using contrast can make it easier to see light switches, outlets, and doorways.

Using contrast can help make identifying light switches, outlets, and doorways easier.

They can use data to compare and contrast among competitors.

Artists use darkness to emphasize and contrast with light.