Deep Blue-Violet Color; a Plant Used to Make Dye

This page is the CodyCross answer for the clue below from Medieval Times, Group 229, Puzzle 1 (Carolingian Dynasty).

Question is: Deep Blue-Violet Color; a Plant Used to Make Dye

and the answer is: INDIGO

Word Meaning:

INDIGO — A purplish-blue color.

Definitions from Wiktionary.