British Navy Officer Sailor Uniforms and Emblems of the Late 19th Century

The emblem of the Royal Navy

In the late 19th and early 20th centuries, the color of military uniforms was focused on protection in wartime.In 1880, the British army in India wore a yellow uniform. Many countries had gray, teal or green uniforms, and in 1895, the British Army used grass-green uniforms for the first time.

Navy blue (navy

blue), also known as "navy blue", is one of the blue, close to the dark blue, used for naval uniforms and so named. Navy blue got its name because the British Royal Navy since 1748 this color for naval uniforms, the rest of the world's navies subsequently adopted the navy blue as the naval uniform color

Can only find so much. In the late 19th century, when cameras were not yet fully developed and popularized, there were no photographs of military uniforms. I can only guess from the text.