Contrast within compositions is a key element in a successful composition. There needs to be contrast among elements to create interest. It helps create an understandable hierarchy. Certain types of contrast can be more effective than others within a composition. When the viewer has immediate impact with the composition large vs. small, spacing or density, and value are all said to be the most effective forms of contrast to the viewer. Each of these things serve a purpose, that being to create meaningful designs. Contrast can also be made through tension of elements. Difference in the shapes of the elements and how they interact is a form of contrast.
