Who knows the symbol and association of color?

Red symbolizes enthusiasm, warmth, joy and courage, and is often used in festive scenes; It is often associated with blood and fire, and fire engines and fire extinguishers are often red; Some of the traffic lights on highways and railways use red lights; Orange is a brighter color. It symbolizes brilliance, warmth and joy, and is often used to express wealth, health and brilliance. Yellow is the brightest color of all colors and a symbol of light, brilliance and hope. Medium yellow and golden yellow are mostly used to show wealth, nobility and brilliance, such as palace decoration and emperor's robes. Pale yellow has a soft and elegant aesthetic feeling. Green is used by people as a metaphor for life and hope, and it is the most dynamic color in nature. Green makes people feel calm and comfortable; Bright green gives people hope and vitality; Dark green gives people a feeling of prosperity. Cyan symbolizes tranquility, remoteness, coldness and sadness. Cyan is suitable for expressing deep and simple feelings. The symbolic meaning of blue depends on its lightness: blue with high lightness symbolizes freshness and tranquility; Blue with low lightness symbolizes solemnity and sublimity; Blue images with extremely low brightness are lonely and sad. Blue makes people have cold, negative and serious psychological associations. Purple symbolizes luxury, dignity and elegance. The psychological association of purple depends on its different lightness and purity, such as purple with high lightness and purity, which has a sense of majesty and luxury; Lavender has a lingering feeling of missing; Deep purple has a sad feeling. White symbolizes purity, purity, elegance, clarity and sublimity. White has the largest brightness and has the visual feeling of outward expansion. Black symbolizes solemnity, sacredness, sadness, profundity, sadness and solemnity. Pure black is very important in photography. Whether the picture is high-profile or low-key, cold or warm, pure black is indispensable.