Define the message. Specify the action desired. Finding these answers should help you get the most succinct, discrete content for the message. Next, apply the KISS principle to the actual design of the banner. No ad is successful unless people notice it.
Contrast is defined as the juxtaposition of dissimilar entities or objects.
Write a paragraph on your computer screen and change the color of one word among the text to red. Notice how the word jumps out from the rest of the text. Be Simple, Be Seen Banner ads are often placed on cluttered, tabloidlike Web pages where every item on the page screams for your attention. If you can target your banner placement, use colors that don't already appear on the page. Or leave a lot of open space in the banner so that the message leaps out from the surrounding context.