I use a super-tiny palette called a Demi Palette from Expeditionary Art that I fill with neutrals only. And every once in a while, I put away my full color palette and use just this one. It teaches me to think better in just value, without the support of color.
I used it last week on for these . But this little spread in my sketchbook shows better what I like to do with it. It contains only two colors, Ultramarine Blue and Transparent Red Oxide, both from Daniel Smith, plus white gouache.
The largest pan contains a pre-mix neutral from the two colors, one that feels neither warm nor cool. When I use it I like to start there and then push it warm or cool with the two colors.
The two whites are both M. Graham Titanium White gouache. I just loaded them in two pans hoping I would keep one clean. You can see that’s more theory than what really happens.
It’s a fun little palette to use and with it’s interchangeable pan setup ( magnetic pans that can be pulled in and out easily, and I have extras), I can see using it for different triads too, and changing them up every once in a while…