Hi, thanks for asking. I love this color too. While I don't know the client's exact color, a few colors I would try would be Benjamin moore's Nantucket fog, Nickel, Brittany blue or glass slipper. Another thing you can do is if you find a color you like, have the paint store add some white to the formula if you want to lighten it up. You can have them mix it for you to test out. Its only paint, and compared to everything else you have to buy for your home, no matter how much experimenting you have to do, it's cheap and worth it!!!