Color psychology is the study of how colors influence human behavior and emotions, such as attention, trust, excitement, or calmness. When applied to web design, it can help you choose colors that match the purpose and tone of your website, as well as the expectations and preferences of your target audience. However, color psychology is not an exact science, as different colors can have different meanings and associations depending on the context, culture, and personal experience of the user. Therefore, it's important to test your website with real users and feedback to see how they respond to your colors. Generally speaking, warm colors like red, orange, or yellow can create a sense of energy or urgency; cool colors like blue, green, or purple can promote relaxation or credibility; and neutral colors like white, black, or gray can enhance readability or create contrast.