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01 Introduction: Color has a direct impact on the appearance quality of explosion-proof electrical products; it serves to beautify both the products and the environment. Proper handling of a product’s exterior colors can make its design even more perfect, helping to maintain emotional stability and improve both the quality and efficiency of work. More importantly, color, through visual information, creates a sense of psychological depth and reinforces people’s initial perception of the importance of safety in explosion-proof electrical products. Therefore, it is necessary to recognize the importance of the color design in the appearance of explosion-proof electrical products, master the rules for using colors, and fully reflect the uniqueness of the safety functions of such products. The “Ex” mark on explosion-proof electrical products, when painted in a special color such as red, not only highlights the professional functions of these products but also plays a role in fulfilling their “psychological function” by stimulating the enthusiasm of workers, thereby raising awareness and serving as a warning regarding safety. It is therefore very necessary to study the color design of the appearance of explosion-proof electrical products. https://pic2.zhimg.com/80/v2-6acbf5827bbafc47eb08e22c766c6a81_720w.jpg 02 Some issues regarding the appearance and color of explosion-proof electrical products. Regarding the exterior colors of explosion-proof electrical products, each manufacturer has always determined them on its own. It did not receive sufficient attention; it only met the basic requirements for product protection, and the color coding function was not utilized to enhance the special features of explosion-proof electrical products, particularly in terms of safety and suitability, which hindered the improvement of the quality of such products. As market competition intensifies, “while users continue to demand higher product quality,” they also place increasing importance on the product’s appearance. For example, there are significant shortcomings in aspects such as the coordination of the product’s own colors, its harmonious integration with the surrounding environment, and the visibility of safety signs. Therefore, paying attention to the color design of explosion-proof electrical products aims to improve their safety, aesthetics, and usability, thereby enhancing the competitiveness of these products. https://pic2.zhimg.com/80/v2-07cf80cae8380bf4dc0588839d32d209_720w.jpg 03 Color design should be in line with the product’s shape, structure, and functional characteristics. Color design is closely related to the functionality of explosion-proof electrical products; achieving harmony and unity between color schemes and the product’s form, structure, and operating environment is a key indicator of successful color coordination. There is a wide variety of explosion-proof electrical products, with significant differences in their shape and size. Different color schemes should be chosen for coloring these products. For example, when explosion-proof electrical products are installed alongside related equipment in environments with special conditions, the colors used should not be too stimulating or eye-catching; at the same time, they should not be too dull either. The colors should help maintain a calm state of mind among operators, and they should also serve to highlight the “Ex” marking indicating explosion protection as well as provide safety warnings in such special environments. Therefore, when selecting colors, it is advisable to choose cool or warm colors with low saturation and high brightness. In particular, stimulating colors (such as bright red and vivid green) should not be used over large areas. For large-scale explosion-proof electrical equipment, overly light colors are not recommended; instead, darker hues like medium gray or blue-gray can enhance the perception of sturdiness, strength, and stability. However, to prevent the overall appearance from becoming dull due to these darker tones, some other colors with higher brightness that harmonize with the main color palette can be incorporated as needed, thereby ensuring a dignified, stable, yet lively and harmonious look. https://pic4.zhimg.com/80/v2-2bf661dff4863932a7cd27d29996da7b_720w.jpg 04 The choice of color tones should evoke pleasant and soft feelings. For a long time, the color schemes used for the appearance of industrial products in China have mainly been dark gray; these tones are dull and harsh, resulting in a very monotonous and lifeless appearance. Therefore, in the design process, determining the color tone is extremely important for the product’s color scheme; it represents the overall trend in coloring. In terms of color temperament, there are cool tones and warm tones, while in terms of hue, there are red tones, green tones, purple tones, and so on ； Based on differences in brightness, they can be divided into high-brightness tones, medium-brightness tones, and low-brightness tones. Due to differences in brightness tendency and degree of brightness contrast, these tones have varying visual effects and impacts on emotions. High-pitched long tones have a positive, bright effect; high-pitched short tones are elegant and gentle, with a bright and pleasant effect. Medium-short tones give a dreamy, subdued, flat feeling, while low-pitched long tones are dark and deep. In short, when setting the tone, it should be both innovative and aesthetically pleasing, without overemphasizing vividness; the goal is to create a lively, pleasant, and gentle sense of beauty. For example, for explosion-proof electrical products used underground in coal mines, it is advisable to use sky blue or light orange as their color. Sky blue is chosen because of the harsh conditions in mines; miners rarely see the blue sky and white clouds outside. Seeing blue provides them with a fresh feeling, boosting their morale and bringing them joy. If light orange is used as the dominant color, it can give miners a sense of warmth, happiness, and brightness. From a psychological perspective, since coal mines are environments filled with explosive gases and are thus associated with danger, when miners see this color, they naturally think of safety, which serves as a warning. Therefore, by applying the laws of color and utilizing its functions, we can enhance aesthetics; moreover, we can leverage the “psychological functions” of color to motivate people to exert their maximum initiative. https://pic4.zhimg.com/80/v2-a5331aa11499339545ac7494b39b17f7_720w.jpg As can be seen, it is necessary to understand the color design of the appearance of explosion-proof electrical products. This not only enhances the aesthetics of the products and the surrounding environment; more importantly, it enables the effective translation of color design into functional features suitable for each product, thereby allowing them to fulfill their intended special functions. This, in turn, helps meet people’s ever-growing needs in terms of both spiritual and material civilization, as well as enabling these products to better compete in domestic and international markets.