Titanium white is my preferred white - I'm used to it and I don't want lead everywhere. But in some colour mixes it goes chalky. For example, I have two different blue shirts I'm painting and the blue-leaning-green looks great but the warmer blue looks like chalk. But what does that mean?
I recall I think it was Mark discussing this but can't recall where. What I want to understand is, in what mixes will titanium white create chalkiness and how can we address it? Are there particular colours that emphasise this effect? I think orange is another colour that goes chalky. Secondly, what exactly is happening to create this chalky impression? Too cool? Loss of chroma? Something else? Is it:
a) the actual mix so that if you viewed it alone it would look chalky; or is it
b) When it sits beside the normal version of the colour it is an unnatural lighter version that doesn't look like light falling on it?
I want to understand what is happening and with which colours, and options to mix in so that I can counter it in any situation.