Whenever possible, a user interface should be inviting and pleasant. Although clarity and simplicity should not be sacrificed for the sake of attractiveness, try to create an application that will not dissuade users.
The use of color can help make your user interface attractive to the target audience, but overuse can inhibit adoption. Loud, vibrant colors might be initially appealing but can cause eyestrain and might be unappealing to some users. When possible, use muted colors with broad appeal. Never rely on color alone to convey information and, when designing for international audiences, be aware that certain colors might have cultural significance.
Usability should determine the fonts you choose for your application. You should avoid fonts that are difficult to read; stick to common, easy-to-read fonts such as Times New Roman or Arial. Use decorative fonts for special visual effects only when appropriate and never to convey important information.
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