ΔE 25.8, loose: different enough that you should pick on purpose. Forest Green is much more saturated, cooler than Noble Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Forest Green is much more saturated, cooler than Noble Skin.
The same difference applies the other way round: Noble Skin 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 Noble Skin on the colour wheel See Forest Green on the colour wheel
All matches: Noble Skin equivalents · Forest Green equivalents