Temperature is other attribute of color; It is related to the grade of heat associated to a color, therefore colors can be classified as warm and cool ones.
The warm colors: red and yellow remind us of fire, while the cool colors remind us the blue and purple of the sky, also ice.
Warm colors are: Yellow, Yellow-Orange, Orange, Red Orange and Red..
Cool colors are: Violet, Purple, Blue-Purple, Blue, Blue-Green, Green and Yellow-Green
Temperature helps us to create different effects in a painting:
Separation: Differences in temperature place color in different
Depth: The temperature in the background dictates the
temperature of the element in a painting , therefore cool objects will come forward in a hot background and hot objects will recede in a cool background, the same principle applies for cool objects t
Transition: When similar color are laid close by, the viewer's eyes can travel trough out the painting without abrupt interruptions.
Interest: can be achieved by inserting cool and warm colors next to the focal point.
Harmony: when combined in the right way, cool and warm colors will give us a pleasant art work. There are some common ways of arrange colors to obtain harmony.
a. Complementary harmony: Mix a color with the color at the opposite side of the color wheel.
Cadmium Scarlet Red + Thalo Blue.
b. Split Complementary Harmonies: The 2 color adjacentat each side of a color's complementary.
You can achieve luminous neutrals by mixing 2 primary color, then cross the circle and neutralize it with the complementary of the resulting color.
Yellow+Blue= Green+ Red= Luminous Neutral.
c. Triadic corners. Just place an equilateral triangle over a color and the other 2 angles will render the harmony. They are:
Primary: Yellow, Blue and Red
Secondary: Orange, Purple and Green.
Tertiary or Intermediate 1: Red-Orange, Blue-Purple and Yellow-Green
Tertiaty or Intermediate 2: Violet, Blue-Green and Yellow-Orange.