K for Kelvin, that is.
If you find that your white balance setting still leaves your pictures yellow when taking pictures in tungsten light even when you set the white balance to Tungsten, try a Kelvin value if your camera supports that. I find, for instance, that in my bedroom 2700K is about right.
If your camera does not support that, use a Custom white balance setting after you shoot a white sheet of paper. Your camera’s manual will help in this.
Of course if you shoot RAW [corrected] this makes no difference, but I still recommend doing this: it reduces your post-production work, plus your back-of-the-camera previews look better.