The whole interior is Sherwin-Williams Greek Villa, SW 7551. It is an off-white with some warmth in it, and Sherwin-Williams puts its light reflectance value at about 84. In plain terms, it bounces back most of the light that hits it, so the rooms read white and bright, but it is not the stark, slightly blue white that can make a house feel like a waiting room.
That warmth is the whole point here. Next to oak floors and an espresso coffee bar, the old gray looked like it was arguing with the wood. Greek Villa sits with it. The arch reads softer, and the dining nook looks like somebody designed it that way.
If you are stuck between whites, try a few before you buy a gallon. There is a color visualizer on our painting page. Our Antioch interior repaint used a different white, Sherwin-Williams White Snow, if you want to compare the two.