Elegant Dinner Dress Blue Navy High Quality & Fashionable WEDTREND Women Sparkly Navy Prom Dress Satin A Line V Neck Formal Dress with Sequins Navy Blue Strappy Back Long Sequin Prom Dress Navy Blue Halter Front Slit Spaghetti Straps A Line Tulle Prom Dress File:DN SC 85 02753 U.S. Navy officer in tropical dinner dress blue.jpg Wikimedia Commons 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