The Chinese word for navy blue is
深蓝色

shēn lán sè

navy blue

Chinese Definition

Components
蓝色
1. Simplified form of 藍色
深
1. (of distance) deep
Antonyms: 淺
2. depth; deepness
3. (of relationships, etc.) deep; profound
4. (of difficulty) great; profound; obtuse; obscure
呢ni1 一題好深。 - This question is really hard to solve.
本書太深喇，我讀極都唔明。 - This book is too hard; I still can't get it after reading it many times.
5. (of time) long
6. (of colors) deep; dark
Synonyms: 濃
Antonyms: 淺, 淡
7. very; extremely
Synonyms: 非常
蓝
1. Simplified form of 藍
色
1. color; tint; hue; shade
顏色 - color
顏色shǎi兒r - color
紅色 - red
四.色.定理 - four color theorem
2. look; expression
臉色 - facial expression
3. scenery; circumstance
景色 - scenery
夜色 - night scenery
4. kind; sort
貨色 - goods; stuff; trash; rubbish; quality of goods; specification
5. feminine charm; beauty
姿色 - good looks (of women)
6. lust; sexual desire
好hào色 - to lust for women
色情 - pornography; sexual desire
7. (colloquial) perverted; being a pervert; lecherous
8. theatrical role
角jué色 - role; part
9. metallic content
成色 - purity (of a precious metal in an alloy)
10. die (a cube with numbers or symbols on each side, used in games of chance)
色shǎi子zi - die
11. (Buddhism) (l-lite, pi, rūpa) (form; material element; form of existence; etc.)
色即是空，空即是色。 - Form is emptiness, emptiness is form.
12. (transgender slang) Short for 色普龍; cypro (cyproterone acetate)