Blue shade (4)
(Other definitions for navy that I've seen before include "Ships-of-war" , "Shade of the marine forces" , "Colour; fighting force" , "military arm" , "Armed force" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">blue shade</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for teal that I've seen before include "Small freshwater duck and colour" , "Strange tale of a duck" , "Small river duck" , "Variety of small ducks" , "Dark green-blue; duck" .)