I've always found dark teal to be a deeply rich, romantic color. (I recently painted my hallway this color, and I love it.) But it's not a color you often see in the kitchen; it's usually reserved for small bedrooms or libraries. And yet this photo makes a compelling case, in my view, that dark teal is a dramatic yet workable choice for a kitchen.
Unless you want a very moody kitchen, the key to using dark teal without it dragging down the whole room is to balance it with lighter colors — in this case, white cabinets and molding. This provides a strong contrast, and allows the dark teal to achieve that wow state — when you look at something and immediately notice how striking it is. (It wouldn't have the same effect if the cabinets were dark.)
What do you think? Would you ever paint your kitchen walls in a dramatic dark teal?