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https://www.printwand.com/blog/whats-the-hidden-meaning-behind-your-logo-color-scheme
Blue
Nature, cleanliness, refreshment, coldness, water, sterility
Serenity, security, authority, stability
Blue Logos
Corporate logos are often blue, especially when the company specializes in technology.
A blue color scheme is used in many corporate logos because its meaning evokes a feeling of professionalism and loyalty. People trust the color blue, which is why it’s the dominant color in many police uniforms. Seeing the color blue creates a calming effect, and it’s the overall most popular “favorite color.”
Because of its association with water and clarity, blue is also a color of choice for refreshing beverages, as well as hygienic products such as soap and toothpaste.