Great sofa.  The gray is a blueish gray.  Back is low, but I knew that from the measurements - still find it comfortable to sit on. Haven't had it long, so can't say how well it will hold up.  Feet came a little damaged from banging against each other (I assume) under the sofa, but I was able to put the feet on the sofa in a way that makes it really hard to see any of the damage. Arms are very low which is exactly what I wanted to that the couch didn't look bulky or big in a small space.