Not sure it matters too much what it's called, more whether you like it. I'd say on the yellow - cream continuum it's more pretty much in the middle, perhaps a little bit on the yellow side.
Bear in mind that you won't really be able to tell if you like any colour until you've put a bit on the wall and then checked in a variety of light conditions - colours change during the day depending on the amount of sunlight etc. Also what you put with it makes a difference - ovenchips is right, if you scroll over to the white cot in that picture the wall looks much less yellow than it does next to the yellow stickers.
I like yellow for walls, we had a bright yellow (almost egg yolk) bedroom for a long time, then had pale yellow for our stairwell and are now planning a more primrose type colour for our kitchen (three different houses!)