Visibility
Color must be seen when superimposed on a background of another color.Foreground and background elements must have enough contrast between them. Inappropriate colors interfere
with legibility, and too many colors can distract from the message.
· For slides and computer screen shows, use dark blues, darker grays, dark greens, and black for the backgrounds.Generally, use yellows and white for the text and graphics; they are considered
the best colors for visibility, since they provide good contrast against dark backgrounds.
· For overhead transparencies, use very light yellow or blue for the background and dark colors for text and graphics.