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](http://www.leighreyes.com/blog/wp-content/uploads/2009/04/cdabluenight.jpg)
The ink itself is gray, gray, gray. It is not Blue Night.