Charcoal Bengals come in a variety of colors. Charcoal Bengals tend to have a dark mask in the face (black line down the nose and under the eyes), and a dark cape (wide band of black or brown down the back). Being a charcoal can affect their overall coloring (which you will see with the charcoal browns)

Charcoal Brown are very dark in overall color. They tend to have black markings with a more silvery background color instead of the usual brown. Although sometimes they can have brown coloring mixed in as well.