The blue hour is the period of twilight in the morning or evening, during the civil and nautical stages, when the Sun is at a significant depth below the horizon and residual, indirect sunlight takes on a predominantly blue shade.
Turns out you don't need to wait for the blue hour to get some serious blues. I went out for a walk after work today to stretch my legs and work out my shutter finger.
Arguably, this was the Golden Hour, but I'm not a stickler for that kind of thing. There's something about the quality of the blue in the winter sky here in Ottawa that you just don't get at any other time of the year.
Combine a crisp, cold, (almost) cloudless sky with a low winter sun and great things happen.
Shot with the Fujifilm X100F and processed in Capture One Pro.