I admit I don't have new photos with proper indigo in them, so I decided to name the colour of this flower pale indigo. Yes.
I found this flower in a vegetable patch near an old farm, but I have no idea what vegetable it could be. It was very big and it looked pretty, though:
Olympus Stylus 1s, 28mm, ISO100, f8, 1/100s
If you know what it is, please let me know in the comments. Until then, I have given it the working name of "Pale Indigo Triffid".