Our perceptions of colour play a large role in how we view people in uniforms. A light blue colour scheme, for example, has connotations of safety and trust. Many individuals in healthcare use this colour for uniforms partly due to this, including nurses and doctors. A dark blue is often the colour for engineers, as well as being practical, it represents reliability and responsibility.
Yellow, on the other hand, is a warm colour that gives off feelings of joy and happiness. Some of the biggest brands in the world use yellow to effectively entice customers, from McDonald's to Disney. If you're looking to show your staff off as welcoming, warm and happy individuals, a yellow uniform could be a great option.
Black is an interesting choice as it is not actually a colour, but a lack of it. Hair-splitting aside, the colour black exudes professionalism and power. Police officers, judges and countless other business professionals choose black as their colour of choice because it portrays an air of class, sophistication and professionalism.
Red grabs attention and is associated with energy and positivity. Studies have actually shown that red stimulates the appetite, which may explain why it is a popular choice for restaurant brands.
Green is associated with listening and understanding, it is also a great colour for those working outdoors.