Bluest

These are the bluest blueberries I have ever seen. They're almost unnaturally blue.

The sky today is the bluest that I've ever seen it.

Some of the bluest water in the world is found in Crater Lake.

"The Aristocrats" is one of the world's bluest jokes.

Snippy had the bluest blood of all his crab brethren.

Far out at sea the water is as blue as the bluest cornflower and as clear as the clearest crystal.