Hue is the actual color, such as red, azure, or citron. Value refers to the lightness or darkness of a color, achieved by the amount of white or black added to it. Intensity, or saturation, refers to the relative purity of a particular color and its brightness or dullness. Different colors act differently within a picture. Dull colors tend to recede.
Different colors express different moods.
Warm colors, for example, tend to convey energy, whereas cool colors convey tranquillity. The organization and structure of a work of art, determined by the arrangement of shapes, forms, colors, areas of light and dark, etc. Contrast makes it possible to show differences between elements such as light and dark parts of a picture. The totality or pattern of relations between organisms and their environment. A technique of painting using pigments mixed with hot wax.