ΔE 42.5, loose: different enough that you should pick on purpose. Magenta Wash is much more saturated, cooler than Reikland Fleshshade.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 43). Magenta Wash is much more saturated, cooler than Reikland Fleshshade.
The same difference applies the other way round: Reikland Fleshshade is 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 Reikland Fleshshade on the colour wheel See Magenta Wash on the colour wheel
All matches: Reikland Fleshshade equivalents · Magenta Wash equivalents