The Alcoa Visual Design System Our logo: backgrounds Use backgrounds that make the Alcoa logo prominent. Background colors Acceptable backgrounds and photos can easily overpower or compete with the logo. It is important that the logo be in contrast with the background. Contrast occurs when two elements are different. The greater the difference, the greater the contrast. The key is to work with contrast to assure the differences are obvious and that the logo is easily distinguished. Unacceptable backgrounds Do not use dark backgrounds Do not use light colors behind behind the blue or black logo. the white logo. 3