Light Rust vs Fire Giant Orange

How close are they?

ΔE 11.0, fair: the same colour family, but not a straight swap. Fire Giant Orange is a little lighter, more saturated than Light Rust. They are different kinds of paint: AMMO by Mig Light Rust is an ink, glaze or transparent paint and Army Painter Fire Giant Orange is a one-coat contrast-style paint, so they won’t behave the same on the model even where the colour is close.

Can I use Fire Giant Orange instead of Light Rust?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Fire Giant Orange is a little lighter, more saturated than Light Rust. They are different kinds of paint.

Can I use Light Rust instead of Fire Giant Orange?

The same difference applies the other way round: Light Rust is a little darker, more muted.

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.