Lavender (5)
I believe the answer is:
mauve
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lavender</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for mauve that I've seen before include "Bluish purple" , "Light purple" , "Bluish-purple" , "Pale purple colour" , "Shade of pale purple" .)