Doesn't make sense to me how blue isn't the best color in the spectrum. It's a primary color for a REASON, people!
I also love blue.  What is your favorite shade of blue?
I love straight-up BLUE. But, ultramarine has a place in my heart...put a little bit of violet in my blue and I'll be a happy lil puppy.
I really like sky blue. Also known as azure.
I can get on board with azure. It's a little too close to cyan for my taste, but I'll allow it. I'm impressed with your color knowledge.