Dark Rust vs Brown Beast Ink

How close are they?

ΔE 9.4, close: similar, with a visible difference side by side. Brown Beast Ink is a little darker, cooler than Dark Rust. They are different kinds of paint: Army Painter Dark Rust is an opaque base/layer paint and Nocturna Models Brown Beast Ink 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 Brown Beast Ink instead of Dark Rust?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Brown Beast Ink is a little darker, cooler than Dark Rust. They are different kinds of paint.

Can I use Dark Rust instead of Brown Beast Ink?

The same difference applies the other way round: Dark Rust is a little lighter, 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.