
The iconic 'boys in blue' are no longer just boys, but the color of their uniforms has remained unchanged since the establishment of modern police forces in the 19th century. In the U.S., the UK, and several other countries, law enforcement officers are easily recognized by their dark navy attire. While the uniform’s design serves a functional purpose, the initial choice was largely based on what was readily available at the time.
As reported by Police1, blue police uniforms originated in London. The London Metropolitan Police, considered the first real police force, introduced the dark blue uniforms when it was founded in 1829. At a time when British soldiers were already in red and white, blue was selected to create a clear distinction between law enforcement officers and the military.
In 1845, New York formed the U.S.'s first official police force, and the blue uniforms inspired by London’s bobbies quickly became standard. Other cities like Boston, Philadelphia, and Detroit also followed suit, adopting blue uniforms for their police officers as well.
In certain instances, American police departments chose the color for reasons entirely different from the UK. During the Civil War, the surplus blue uniforms from the Union Army were readily available, and many of these were given to police departments that had yet to adopt an official uniform. This is how the Los Angeles Police Department first adopted blue uniforms. After the war, the color became a permanent fixture.
Today, police officers wear blue primarily for functional purposes. The deep navy color helps them blend in when pursuing suspects at night. Additionally, it’s more effective at concealing stains compared to lighter colors. While not all police uniforms are blue—some officers are seen in black or dark green—dark blue remains the color most strongly associated with the profession.