Crayola has it as a purplish blue:
Kona Cotton has it as darker than navy blue:
This is an Indigo bush:
And how about Indigo by Lancome:
And I now know there is a Texas Indigo Snake. Look at that beautiful blue pattern:
So I decided *MY* indigo challenge project would be mostly dark blue, some purples and some purplish blues - dark and light. (The green is the cutting mat) And I think they all look great together. And since we don't allow quilt police in this challenge, I am very happy to go with it. These would be one side of a tote.
The plan is to complete this project during our 4 day retreat. Yes, 4 day retreat! Can't wait.