ΔE 18.1, loose: different enough that you should pick on purpose. Lime Green is a little darker, much more saturated, warmer than Mist Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Lime Green is a little darker, much more saturated, warmer than Mist Green.
The same difference applies the other way round: Mist Green is a little lighter, much more muted, 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 Mist Green on the colour wheel See Lime Green on the colour wheel
All matches: Mist Green equivalents · Lime Green equivalents