The color wheel has two sub divisions, warm and cool tones. These two divisions are separated by red, orange, yellow (warm) and blue, purple, green (cool). it is very important to remember that these two divisions have very important meanings; cool colors are a sign of calmness, peacefulness and serenity, while warm tones are a sign of energy, brightness and action.
the use of these tones may have an impact on the way people see an object.