Burnt Orange vs Orange Rust

How close are they?

ΔE 14.2, fair: the same colour family, but not a straight swap. Orange Rust is a little darker, more saturated, cooler than Burnt Orange.

Can I use Orange Rust instead of Burnt Orange?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Orange Rust is a little darker, more saturated, cooler than Burnt Orange.

Can I use Burnt Orange instead of Orange Rust?

The same difference applies the other way round: Burnt Orange is a little lighter, more muted, 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.