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 File:U.S. Navy evening and dinner dress blue uniforms, c. 1967.jpg Wikimedia Commons Navy Blue Velvet Prom Dresses with Organza Overskirt Off the Shoulder 24210 Navy Blue US6 Off Shoulder Simple Satin Navy Blue Long Formal Evening Dress With Slit Front $164.5914 #TZ1327 SheProm.com Male Chief Dinner Dress Blue Plunging V Neck Embroidered Navy Blue Formal Gown Xdressy