Grim Rust vs Skrag Brown

How close are they?

ΔE 6.1, close: similar, with a visible difference side by side. Our swatches for the two are almost the same. They are different kinds of paint: Army Painter Grim Rust is a fluorescent or effect paint and Citadel Skrag Brown is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.

Can I use Skrag Brown instead of Grim Rust?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). The swatches are almost the same. They are different kinds of paint.

Can I use Grim Rust instead of Skrag Brown?

The same difference applies the other way round.

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.