ΔE 23.1, loose: different enough that you should pick on purpose. Reikland Fleshshade is a little lighter, much more muted, warmer than Red Tone.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Reikland Fleshshade is a little lighter, much more muted, warmer than Red Tone.
The same difference applies the other way round: Red Tone is a little darker, much more saturated, 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 Red Tone on the colour wheel See Reikland Fleshshade on the colour wheel
All matches: Red Tone equivalents · Reikland Fleshshade equivalents