ΔE 15.8, loose: different enough that you should pick on purpose. Gypsum White is noticeably lighter, more muted than Rakarth Flesh.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Gypsum White is noticeably lighter, more muted than Rakarth Flesh.
The same difference applies the other way round: Rakarth Flesh is noticeably darker, more saturated.
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 Rakarth Flesh on the colour wheel See Gypsum White on the colour wheel
All matches: Rakarth Flesh equivalents · Gypsum White equivalents