Someone asked if I inadvertently omitted straight-from-the-tube black from my palette. The omission wasn’t inadvertent. I don’t use ivory black (or any other black) ‘as is.’ Ivory black is too cold to use as is, but not cold enough for a truly cold black, which is why I create the mixtures illustrated in the linked post. Ivory black + ultramarine blue for cool black, and ivory black + burnt umber for a neutral black. For warmth, I add more burnt umber or, more typically, use burnt umber + cobalt (or cerulean) blue.