Burnt Sienna 3

Burnt Sienna is a Orange Dark hue. Mixing it with Ultramarine Blue makes a Burnt Umber hue. That means Burnt Umber can be left out of a limited palette and just use Burnt Sienna. Another advantage of this burnt senna hue is that it doesn't soak up as much oil and still has gloss. More Ultramarine Blue will make it a neutral dark. If I had only four colors and white, this would be one of the four.