I added one more part of Annie Sloan Chalk Paint in Florence and that did the trick!
My new ratio for Tiffany Blue Chalk Paint is:
6 parts Pure White
3 parts Florence
1 part Provence
... and it truly made a perfect Tiffany blue (see photo below).
The second coat dried a lot darker than the first as well and that helped a lot! You can no longer see any brush strokes and it covered extremely well concidering it was a very dark stain when I started.
Can you spot the tiffany's box? It blends right in! Do I know my colors or do I know my colors. I didn't even use the box color for reference, I just grabbed it for the picture!
Almost finished... I still have to sand down some of the edges to give it a SLIGHT distressed look and wax the entire thing. I'm waiting for a non rainy day so I can do that part outside. In the meantime this will stay in the middle of the floor in the kitchen!