Deathclaw Brown vs Rust Orange

How close are they?

ΔE 15.7, loose: different enough that you should pick on purpose. Rust Orange is a little darker, more saturated, cooler than Deathclaw Brown.

Can I use Rust Orange instead of Deathclaw Brown?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Rust Orange is a little darker, more saturated, cooler than Deathclaw Brown.

Can I use Deathclaw Brown instead of Rust Orange?

The same difference applies the other way round: Deathclaw Brown 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.