Emphasis is also known as contrast.   It is a way of using the elements to stress the difference of certain elements.      Emphasis would be accomplished by using sudden and abrupt changes in elements.

Usually, emphasis is used to direct and focus the viewer's attention to the most important or centers of interests of a design.    Centers of interests of a design are areas of a piece where you look at the most and hold your attention, because it catches your interest.


E l e m e n t s
Color | Value | Line | Texture | Shape | Form | Space

P r i n c i p a l s
Balance | Emphasis | Harmony | Variety | Gradation
Movement | Rhythm | Proportion

T e r m s
Look for more terms here