So here’s an expansion of the black study started yesterday.
First, I add Titanium White to the paint in increments. You can see the nice grey-blue tone that appears. A colour on its own, or can be used as a shade of a more pure blue, or as a toned down contrast to the complimentary colour.
Then I add it to three primary colours: Prussian Blue, Cadmium Yellow Light and Cadmium Red Middle.
As you can see, because both Prussian Blue and Payne’s Grey are transparent, it’s hard to see the shift. For studies, it might be a good idea to add a dot of white to transparent colours to show the colour shifts effectively. To the naked eye, the blue takes on a deeper, richer colour.
Most blacks are blue based, so don’t be surprised to see yellow turn to green when mixed.
I like how the red deepens without turning muddy.