Look at the use of blue in the image that accompanies this article. How does blue make you feel? Do you associate blue with certain qualities or situations?
One important thing to remember is that the feelings evoked by certain colors are not necessarily universal. Cultural differences sometimes play a role in how people perceive color. Individual experiences also have an important effect on the moods that colors can create. If you associate the color blue with a vivacious and lively friend, then you might see it as a high energy color that evokes a sense of excitement.