Victorian Vintage Style Long Dusty Blue Evening Dress AL3002 Off Shoulder Navy Blue Cady Evening Dress, Triple Off white Organza Bo Gattinolli by Marwan Sexy Blue Evening Dress, Mermaid Formal Gown, Bridesmaid Dress, Long Sleeves, Prom Dress, Couture Dress With Lace by Tonena Etsy 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