noun, noun which may take the genitive case particle 'no'
Refers to a dark, rich blue color, often used for uniforms, fabrics, and traditional Japanese items.
He is wearing a navy blue suit.
This deep blue cloth is very durable.
紺 (こん) means 'dark blue' or 'navy', and 色 (いろ) means 'color'. The compound simply means 'navy blue color'.