Naples Yellow Deep vs Plague Brown

How close are they?

ΔE 15.0, fair: the same colour family, but not a straight swap. Plague Brown is a little lighter, more muted, cooler than Naples Yellow Deep.

Can I use Plague Brown instead of Naples Yellow Deep?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Plague Brown is a little lighter, more muted, cooler than Naples Yellow Deep.

Can I use Naples Yellow Deep instead of Plague Brown?

The same difference applies the other way round: Naples Yellow Deep is a little darker, more saturated, 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.