ΔE 29.8, loose: different enough that you should pick on purpose. Belladonna Green is a little darker, much more muted, cooler than Forest Sprite.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 30). Belladonna Green is a little darker, much more muted, cooler than Forest Sprite.
The same difference applies the other way round: Forest Sprite 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 Forest Sprite on the colour wheel See Belladonna Green on the colour wheel
All matches: Forest Sprite equivalents · Belladonna Green equivalents