ΔE 11.8, fair: the same colour family, but not a straight swap. Cement Grey is a little darker, cooler than Rakarth Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Cement Grey is a little darker, cooler than Rakarth Flesh.
The same difference applies the other way round: Rakarth Flesh is a little lighter, 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 Rakarth Flesh on the colour wheel See Cement Grey on the colour wheel
All matches: Rakarth Flesh equivalents · Cement Grey equivalents