My 2 favorite polish colors ever!!! I love brown and navys. Most of my collection is those 2 colors.
Navy:
RBL dead calm
Deborah Lippmann rehab
NARS midnight Express
OPI Russian Navy
OPI Suzi Skis in the Pyrenees (almost black)
OPI yoga-ta get this blue
OPI- Midnight Blue
Orly Witches Blue
Zoya- Indigo
Zoya- Ibiza
Nubar- Night Sparkle
Nubar- Navy Blue
Browns:
Nubar Truffles Collection (they have amazing browns)
Zoya- Nina (slight hint of red)
Zoya- Angelina
OPI Suzi loves cowboys (currently on my fingers)
Borghese espresso brown
Essie- hot cocoa
Essie- Little brown dress
Bourjois- has a great brown with awesome shine
I could go on forever so I'll stop here.