ΔE 9.7, close: similar, with a visible difference side by side. Burnt Sienna is cooler than Skrag Brown. They are different kinds of paint: Citadel Skrag Brown is an opaque base/layer paint and Golden Burnt Sienna is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Burnt Sienna is cooler than Skrag Brown. They are different kinds of paint.
The same difference applies the other way round: Skrag Brown is warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Skrag Brown on the colour wheel See Burnt Sienna on the colour wheel
All matches: Skrag Brown equivalents · Burnt Sienna equivalents