Colors are divided into warm tones (red, orange), cool tones (green, blue) and neutral tones (purple, yellow, black, gray, white) according to psychological feelings. In painting and design, warm colors give people a sense of intimacy and warmth; cool colors give people a sense of distance and coolness. Components of complex colors to determine the chromaticity based on the specific composition and appearance.
In addition, people's feelings about chromaticity are also strongly influenced by light and neighboring colors. Color warm and cold feeling is people in the long-term life practice due to association and formation. Red, orange often reminds people of the red flame, so there is a warm feeling, so called "warm colors"; green, blue often reminds people of green forests and blue snow, so there is a cold feeling.
Common warm and cold colors: red (warm) orange (warm) yellow (warm); green (cold) blue (cold)
Expanded information:Warm and cold color applications: in commercial design, green conveys the freshness, ideal, hope, growth of the imagery, in line with the service industry, health care industry's appeal, in order to avoid eye fatigue during operation, many working machinery is also green. In factories, in order to avoid eye fatigue during operation, many working machines also use green, general medical institutions, also often use green for space color planning, namely marking medical supplies.
Violet is the shortest wavelength of visible light. Purple is a non-perceptual color, it is beautiful and mysterious, give people a deep impression, it is both threatening and inspiring. Purple is the hue that symbolizes piety, and when light and understanding illuminate the color of obscurity and piety, the beautiful and lovely halo color enchants the mind!
Baidu Encyclopedia - Warm and Cold Colors