The Russian word for navy blue is
тёмно-синий

Translations for navy blue and their definitions

синий
1. adj. deep blue
2. adj. indigo
3. adj. dead (sense transferred from the blue color of a dead person's face)
4. adj. drunken, drunk (also acts as noun)
5. adj. being a thief from the Russian mafia (from the blue color of the tattoos that cover his body)

синий
1. имеющий цвет ясного неба
2. (субст.) синий цвет, один из цветов радуги в русском языке

Pronunciation