4) Use Sans Serif Fonts
With typography, go for legibility over fun. While you can use a creative font for a slide title, avoid using it for body text. Instead, stick to clean, traditional typefaces like Helvetica. And if you’re using a dark background, make the text bold for readability.
5) Size Fonts Appropriately
Chances are you’re designing your presentation on a laptop—and that’s a much different size than the final presentation screen. When sizing your fonts, keep in mind that the text should be large enough to be read by the person in the back of the room.
6) Maintain a Strong Contrast Between Text and Background
In order for your message to pop, you need a high level of contrast between your text and the background. If your background image features a lot of variation, portions of your text may not be legible. In that case, a stylish bar of color behind the image can bring the legibility back while adding visual interest.
7) Use No More than 5 Colors
A harmonious palette can easily enhance the look of your entire presentation. No need for complex gradients or textures here; you can get excellent results with just the right colors. Use a tool like Adobe’s Kuler or a site like COLOURLovers to choose a good selection.
8) Use Contrasting Text Colors to Draw Attention
It’s like bold and italic, but better. Use a single color in your selected palette to emphasize important points in your text. However, make sure not to overdo it.