Phoenix Red vs Grunge Brown

How close are they?

ΔE 13.5, fair: the same colour family, but not a straight swap. Grunge Brown is more muted, warmer than Phoenix Red.

Can I use Grunge Brown instead of Phoenix Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Grunge Brown is more muted, warmer than Phoenix Red.

Can I use Phoenix Red instead of Grunge Brown?

The same difference applies the other way round: Phoenix Red is more saturated, cooler.

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.