That's nice scratch building in the cockpit Roman, and the tub itself is looking good too. I think this might be an old kit, I recall making this one or one very similar decades ago possibly.
Hi Roman. Post WWII/Korean War US Navy blue was quite dark. The blue would approximate to Blue Angel Blue (Vallejo Model Air 90) or Midnight Blue (Humbrol 15). The colour you shot there looks like Vallejo Dark Sea Blue (87)? Should be close. Check this website for ANA colours: