ΔE 21.8, loose: different enough that you should pick on purpose. Gnome Flesh is noticeably lighter, more saturated, warmer than Scar Tissue.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Gnome Flesh is noticeably lighter, more saturated, warmer than Scar Tissue.
The same difference applies the other way round: Scar Tissue is noticeably darker, more muted, 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.
See Scar Tissue on the colour wheel See Gnome Flesh on the colour wheel
All matches: Scar Tissue equivalents · Gnome Flesh equivalents