ΔE 22.8, loose: different enough that you should pick on purpose. Russ. AF Light Blue is much more muted, cooler than Pastel Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Russ. AF Light Blue is much more muted, cooler than Pastel Green.
The same difference applies the other way round: Pastel Green is 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 Pastel Green on the colour wheel See Russ. AF Light Blue on the colour wheel
All matches: Pastel Green equivalents · Russ. AF Light Blue equivalents