Most website visitors will make a three-second decision whether to stay on a web page based on the visual information and impression they receive. Consciously or not, their eyes will quickly scan a page for certain words, during which they are judging the page’s design for credibility. As typography and colors are a main factor in both these areas, the choices you make in the font-family and color palette are fundamental to the layout design.
A good sense of how the typography will work in tandem with your design is essential when designing any web page or graphic with text. The primary considerations are whether a font is easily readable, whether or not it is available to all your visitors (web-safe), and the impression it will convey about your business or organization (formal or casual).