I am very much certain that the color is Benjamin Moore AF-720 "Sparrow"....I'm sorry that you are having such a time with it.

As I said, color changes with every lighting condition, so what you see here could easily look nothing like this in your home. Keep in mind, there are windows on 3 sides of this room, so it gets lots of natural light — plus 2 table lamps casting light on the walls AND there was artificial lighting brought in by the photographer for the shoot. If you look at the wall in the corner, above the windows, you can see that the color is much darker than it is right over the bed.

Furthermore, your computer monitor can display colors very differently from another monitor, so it's really hard to even know what you are seeing. Technology is great, but there still has yet to be any universal way of accurately displaying colors.

So as "decocco" said, the only way to do this is to buy quarts (or smaller samples) of several colors you like and do brush-outs on your wall to truly see how the color looks in your space. And don't just do one coat of paint....you must paint 2 or 3 coats to get the true color. And if it's a darker color, it can take days for it to dry to the true color it will be.....so many variables to consider. I do this for almost all of my projects and despite being in this business for many years, sometimes I am surprised by the result and then I tweak the color before painting the whole room.

Good luck!