Rust Tone vs Sharpnel Red

How close are they?

ΔE 6.9, close: similar, with a visible difference side by side. Sharpnel Red is more muted than Rust Tone. They are different kinds of paint: Army Painter Rust Tone is a wash/shade and Scale75 Sharpnel Red 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 Sharpnel Red instead of Rust Tone?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Sharpnel Red is more muted than Rust Tone. They are different kinds of paint.

Can I use Rust Tone instead of Sharpnel Red?

The same difference applies the other way round: Rust Tone 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.