When we look at a picture, Some colors make people feel happy, While others make people feel uncomfortable or give a strong Strong stimulation, or do not give any feeling.Therefore, we make those people feel happy color combination called harmony. Of course, this is only from the subjective understanding of the meaning of harmony; from the objective, from the color itself to see, we know, in "12 kinds of hue color wheel map" On the opposite color must be complementary colors, Complementary tones and will produce gray, therefore, If two or more colors are mixed to produce a neutral gray, Then between them is harmonious. In particular, in All the complementary colors in the color wheel, All three equilateral triangle or isosceles triangle constitute the color, All form squares or long