Goddess Glow vs Dead Flesh

How close are they?

ΔE 23.8, loose: different enough that you should pick on purpose. Dead Flesh is much more muted, warmer than Goddess Glow.

Can I use Dead Flesh instead of Goddess Glow?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Dead Flesh is much more muted, warmer than Goddess Glow.

Can I use Goddess Glow instead of Dead Flesh?

The same difference applies the other way round: Goddess Glow is much 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.