ΔE 18.1, loose: different enough that you should pick on purpose. Rus. AF Grey Prot. Coat is noticeably lighter, more muted, cooler than Soft Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Rus. AF Grey Prot. Coat is noticeably lighter, more muted, cooler than Soft Green.
The same difference applies the other way round: Soft Green is noticeably darker, 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 Soft Green on the colour wheel See Rus. AF Grey Prot. Coat on the colour wheel
All matches: Soft Green equivalents · Rus. AF Grey Prot. Coat equivalents