The concept of color is used to refer to the actual color of the pigment or materials that lend themselves to physical and chemical identification and analysis.
Color vision that occurs in the eyes and in the mind, brings the human semantic content.
However, the eye and the brain can come for a clear distinction between the colors only by means of comparisons and contrasts. The significance and value of the chromatic colors can be identified only through his relationship to any achromatic color – black, white or gray, or in its relation to one or more other chromatic colors. The perception of color, as opposed to its physical and chemical reality, a reality psychophysiological.
Psychophysiological reality of color is exactly what I call a color effect. Color as such and the impact of the same color only in the case of harmonic tones. In all other cases the color instantly becomes altered, a new quality. Let us give you some examples. It is known that a white square on a black background will appear larger than the black square of the same size on a white background. The white color is emitted and beyond its limits, while the black lead to a reduction in the size of the planes they occupied. Dark gray square appears dark on a white background, but the same light gray square on a black light is perceived.
Figure 58 is given a yellow square on a white and black background. On a white background it seems darker, giving the impression of a light gentle heat. On the black it becomes extremely bright and gets cold, aggressive character. Figure 59 depicts a red square on white and on a black background. On white red color it appears very dark and the brightness is barely noticeable. But in the same black emits a bright red heat. If you draw a blue square on a white background and black, then white it will look dark, deep color, and around him will be even more white light than is the case with a yellow square. On the black background blue brighten and acquire a bright, deep and glowing tone. If the gray square to portray the icy blue and red-orange background, it is on the ice blue it becomes reddish, while surrounded by orange-red – bluish. The difference becomes very noticeable when the compositions considered simultaneously. When the color impression of him (his action) are not the same color produces dissonant, moving, unreal and fleeting impression. The fact that the conversion of the material givens shapes and colors in a virtual vibration gives the artist the opportunity to express what can not be put into words. These examples could be considered as a manifestation of simultaneity. The possibility of simultaneous transformations makes us while working on the composition of colors to start with assessing the effects of color and then in accordance with the thinking of the nature and size of patches of color.
If the theme of the work comes from the emotional shock of the first, then the whole process of formation should be subordinated to this original and basic feeling. If the main means of expression is the color, the composition should begin by defining the color patches, and that will determine its pattern. Whoever starts with a drawing, and then add color to the lines, never be able to achieve a convincing and strong color effects. Color has its own weight and the force of radiation and makes the plane a different value than do the line.