Contrast: Identifying the Main Point Quickly Audiences need contrast. Viewers immediately perceive the difference between the attributes of two or more things, and this focuses their attention. There are many ways to create contrast on a slide; here are some examples: size shape shade color proximity Establishing a relationship between slide elements is an important first step. The contrast in the size of the following text, for example, draws the eye to the larger text as if it's a title or context for the text block. Regardless of where the text is placed, the larger text is perceived as the most important.