Tundra 2133-70
Harbor Gray AC-25
Smoke Embers AC-28
Stonington Gray HC-170
American White 2112-70
Barren Plain 2111-60
Calm 2112-70
Cement Gray 2112-60
Picking a gray is hard but well worth it. It's my favorite color (other than blue) to design with. They have so many undertones they can change colors depending on what it's next to, which also makes it difficult to find the right one. I've posted some of my favorites and put them next to one another so it's easier to find what color undertones they have. For rooms with cool blue accents and white trim go for Tundra 2133-70. To warm it up use the American White 2112-70 with pink undertones. For a dark dramatic room try Harbor Gray AC-25, and for an airy light room try Calm 2112-70.