Caran d’Ache Blue Night: the ink decepticon.

First, it’s the name. “Blue Night” leads me to expect a dark blue, like an indigo touched with black. The label on the ink bottle doesn’t help. It is a deep night sky touched with purple light.

Caran d'Ache Blue Night
Caran d'Ache Blue Night

The ink itself is gray, gray, gray. It is not Blue Night.