ΔE 19.0, loose: different enough that you should pick on purpose. Pastel Green is noticeably darker, more muted than Stone Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Pastel Green is noticeably darker, more muted than Stone Green.
The same difference applies the other way round: Stone Green is noticeably lighter, more saturated.
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 Stone Green on the colour wheel See Pastel Green on the colour wheel
All matches: Stone Green equivalents · Pastel Green equivalents