Rust Brown vs Old Rose

How close are they?

ΔE 14.2, fair: the same colour family, but not a straight swap. Old Rose is a little lighter, cooler than Rust Brown.

Can I use Old Rose instead of Rust Brown?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Old Rose is a little lighter, cooler than Rust Brown.

Can I use Rust Brown instead of Old Rose?

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