I purchased the navy blue king duvet. It fits perfectly on my oversized king down comforter. The color is a very dark navy. I wasn't sure what to expect from the sateen finish, but once it was washed I couldn't tell it was there. It is not shiny or slippery. The duvet is very good quality. My only complaint is the chemical smell. I washed it twice before using it, and the smell was still strong enough to bother my asthma while I slept. I've had it on my bed for several weeks now, and the odor is still lingering.