ΔE 14.8, fair: the same colour family, but not a straight swap. Sand Grey is noticeably lighter, more saturated, warmer than Rakarth Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Sand Grey is noticeably lighter, more saturated, warmer than Rakarth Flesh.
The same difference applies the other way round: Rakarth Flesh 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 Rakarth Flesh on the colour wheel See Sand Grey on the colour wheel
All matches: Rakarth Flesh equivalents · Sand Grey equivalents