ΔE 27.2, loose: different enough that you should pick on purpose. Moss Green is a little lighter, cooler than Poxwalker.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Moss Green is a little lighter, cooler than Poxwalker.
The same difference applies the other way round: Poxwalker is a little darker, 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 Poxwalker on the colour wheel See Moss Green on the colour wheel
All matches: Poxwalker equivalents · Moss Green equivalents