ΔE 27.1, loose: different enough that you should pick on purpose. Gutrippa Flesh is noticeably darker, much more saturated, cooler than Maggot Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Gutrippa Flesh is noticeably darker, much more saturated, cooler than Maggot Skin.
The same difference applies the other way round: Maggot Skin is noticeably lighter, much more muted, 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.
See Maggot Skin on the colour wheel See Gutrippa Flesh on the colour wheel
All matches: Maggot Skin equivalents · Gutrippa Flesh equivalents