This rug is pretty and stays put on the floor without a pad.  However, while it may be washable it really isn't vacuumable.  We had some sawdust on it from working in the kitchen and it just won't come out.  The surface is like velcro.  Plus, it is thin so the vacuum pulls the rug right up.  As for the color, it is barely charcoal.  It has a slightly turquoise green hue to it, at least in our light.  The tones are very cool