Off-white colour (5)
I believe the answer is:
ivory
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">off-white colour</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ivory that I've seen before include "Like the tower" , "recluse's tower?" , "Substance in elephant tusks" , "Hard creamy-white dentine used for making ornaments" , "Yellowish white - material from tusks" .)