For more information on how exact colors play into the psychology of web design, Vandelay Design has a great article outlining each primary and secondary color and its effects on viewers.

Color plays an important part in a design. Colors evoke emotions ... there is a list of color-contrast checking tools in the color section of the Web Accessibility: Resources webpage.

Blue: Serene, Trustworthy, Inviting Blue is one of the most popular colors in web design – and for good reason. Blue is the color of calm and serenity, and as such inspires security and a ...