Pecatum Flesh vs Flesh Wash

How close are they?

ΔE 26.8, loose: different enough that you should pick on purpose. Flesh Wash is a little lighter, much more muted, cooler than Pecatum Flesh.

Can I use Flesh Wash instead of Pecatum Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Flesh Wash is a little lighter, much more muted, cooler than Pecatum Flesh.

Can I use Pecatum Flesh instead of Flesh Wash?

The same difference applies the other way round: Pecatum Flesh is a little darker, much 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.