Peacock is the first thing that comes to mind for Royal Blue.
The same one of white for day 2 in the lamp light
I am using the foam plates we get in the hotel and plain white A4 sheet and making these rangolis. For colours i use crayons
I am right now in the US and staying in a hotel. With the limited spaces and resources i try to do some Poojai and Rangoli. I am sharing my work here. Happy Navarathri to All. I am trying to follow the colours for 9 days. So my works are based on that colour.