The first thing we think of when we think of blueness is the sky. This is the sky in October, peak foliage, with a sky so deep a blue there is no name for it.
And then, we think of the ocean. Sailing the ocean blue, though the ocean is often more gray than blue, we remember it best and with joy when it is at its bluest.
And finally, there are the blues. Singing the blues, the heartache of life expressed in a voice that brings tears to your eyes, yet a song to your lips.
Blue. Blues. Bluest.