Every color has its own meaning. Some colors even have two or more meanings. The practice of correct color selection is an art. One must know the meanings of all colors to make the right choices. Color research is extensive and results change as do the times.
Different colors mean different things in different cultures.
For example, in the United States, blue is considered to be a relaxing color. Tests reveal that the color blue lowers blood pressure, calms, and gives viewers a sense of security. Blue is also an appetite suppressant. In Middle Eastern countries, blue is believed to be a protective color. People even paint their front doors blue to ward off evil sprits.