ΔE 32.1, loose: different enough that you should pick on purpose. Reikland Fleshshade is a little darker, much more muted, cooler than Orange Tone.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 32). Reikland Fleshshade is a little darker, much more muted, cooler than Orange Tone.
The same difference applies the other way round: Orange Tone is a little lighter, much more saturated, 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 Orange Tone on the colour wheel See Reikland Fleshshade on the colour wheel
All matches: Orange Tone equivalents · Reikland Fleshshade equivalents