Earth Brown vs Light Rust

How close are they?

ΔE 10.9, fair: the same colour family, but not a straight swap. Light Rust is a little lighter, more saturated, cooler than Earth Brown.

Can I use Light Rust instead of Earth Brown?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Light Rust is a little lighter, more saturated, cooler than Earth Brown.

Can I use Earth Brown instead of Light Rust?

The same difference applies the other way round: Earth Brown is a little darker, 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.