Necrotic Flesh vs Thar Brown

How close are they?

ΔE 17.3, loose: different enough that you should pick on purpose. Thar Brown is more muted, warmer than Necrotic Flesh.

Can I use Thar Brown instead of Necrotic Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Thar Brown is more muted, warmer than Necrotic Flesh.

Can I use Necrotic Flesh instead of Thar Brown?

The same difference applies the other way round: Necrotic Flesh 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.