This is how that's been working out for us:
We go to B&Q, we look at the 50+ choices of white that we are afforded in a modern society and we discuss. That one's too cream, that one's too blue, etc. We hold up off cuts of the white oak (which definitely isn't white), we um and we ah.
We leave with no paint. On returning home and gaining our senses over a drink decide that they're all just white and we should just go and buy one, not letting ourselves be bamboozled by the samples which are so grubby from being pawed that they no longer resemble greys, let alone whites - so we return the next day full of determination and slight embarrassment at our previous indecision over 'white'.
But cotton white really is quite cream, and antique white quite cold ... and we descend into the debate again - before leaving devoid of paint and unsure about what the world is coming to - they are just all white after all...