Double Breast Navy Blue Prom Evening Dress Suits for Men , Dinner Party Suit 2 Pieces CB07192 US34 Navy Blue Formal Dresses & Evening Gowns, Blue Formal Dress, Blue Maxi Dress, Blue Satin Dress, Light Blue Satin Dress, Blue Evening Dress Etsy 251E4287 Shimmer Burnout A Line Sleeveless Blue Evening Dress Service Dress Blue (Yankee) uniform was for "warm weather afternoon and early evening functions such as yachting parties." The uniform was formally phased out in 2011 : r navy