Fall Green vs Dead Flesh

How close are they?

ΔE 15.0, loose: different enough that you should pick on purpose. Dead Flesh is more muted, warmer than Fall Green.

Can I use Dead Flesh instead of Fall Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Dead Flesh is more muted, warmer than Fall Green.

Can I use Fall Green instead of Dead Flesh?

The same difference applies the other way round: Fall Green 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.