Warm orange tone-free, bright, hopeful, compassionate, easily moved, helpful and willing to sacrifice-warm yellow tone-warm, bright, rich, stable and independent, spontaneous, with a sense of justice, perfectionist purple and cold tone-luxury, beauty, anxiety, safety, love, repentance, humility, hope, enthusiasm and enthusiasm. When orange is slightly mixed with black or white, it will become a steady, subtle and bright warm color, but when mixed with more black, it will become a burnt color; Adding more white to orange will bring a sweet and greasy feeling. The visibility of orange is very high. Among the industrial safety colors, orange is a warning color, such as motorcycles, mountaineering clothes, backpacks, life jackets and so on. Orange can generally be used as a festive color, but also as a rich color, such as many decorations in the palace. Orange can be used as the decoration color of the restaurant. It is said that using oranges in restaurants can increase appetite. Orange is matched with light green and light blue to form the loudest and happiest color. Orange and light yellow have a comfortable sense of transition. Generally, orange can't be matched with purple or dark blue, which will give people a feeling of uncleanness and obscurity. Because orange is very bright and dazzling, it sometimes makes people have a negative and vulgar image, which is especially easy to happen in the use of clothing. Therefore, when using orange, we should pay attention to the choice of matching colors and expressions in order to set off the bright, lively and delicious characteristics of orange. Yellow is brilliant, with the brilliance of the sun, symbolizing the light of wisdom that illuminates the darkness. Yellow has golden light, symbolizing wealth and power, and is the color of pride. Among industrial colors, yellow is often used to warn of danger or remind attention, such as yellow lights on traffic signs, large machinery for engineering, raincoats and rain boots for students, etc. Yellow can achieve infinite expansion of power against the background of black and purple, and light pink can conquer the proud yellow prince like a girl. Yellow and green collocation, full of vigor and vitality; Yellow and blue match, it looks beautiful and fresh; Pale yellow and dark yellow are the most elegant combinations. Because of its strong feminine characteristics, the use of purple in commercial design is also restricted. In addition to the product or corporate image related to women, other designs are not often used as the main color. Purple is the shortest visible light wave. Purple is an imperceptible color. It is beautiful and mysterious, giving a deep impression. It is both threatening and inspiring. Purple is a color that symbolizes piety. When light and understanding illuminate the pious color of ignorance, the beautiful and lovely aura will make people ecstatic! Using purple to express loneliness and dedication, and using purple to express sacred love and spiritual realm, this is the performance value brought by purple. Purple is in an uncertain state between cold and warm, and its low lightness constitutes the psychological negative feeling of this color. Unlike yellow, purple can't hold many colors, but it can hold many faded layers. A dark and pure purple will become a very beautiful and soft color as long as a small amount of white is added. With the continuous addition of white, there are many layers of lavender, and each layer of lavender is so soft and moving.