What does the sky blue uniform mean?

It is the coldest color. Blue is very pure and is often associated with the ocean, sky, water, and the universe. Pure blue shows a kind of beauty, calmness, reason, serenity and vastness. Due to the calm characteristics of blue, it has a rational and accurate image. In commercial design, most products or corporate images that emphasize technology and efficiency use blue as the standard color and corporate color, such as computers, cars, photocopiers, and photographic equipment. Wait, in addition, blue also represents melancholy, which is influenced by Western culture. This image is also used in literary works or commercial designs with emotional appeals.