Gorthor Brown vs Walnut Brown

How close are they?

ΔE 8.2, close: similar, with a visible difference side by side. Walnut Brown is more muted than Gorthor Brown. They are different kinds of paint: Citadel Gorthor Brown is an opaque base/layer paint and Green Stuff World Walnut Brown is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Walnut Brown instead of Gorthor Brown?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Walnut Brown is more muted than Gorthor Brown. They are different kinds of paint.

Can I use Gorthor Brown instead of Walnut Brown?

The same difference applies the other way round: Gorthor Brown is more saturated.

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.