ΔE 17.6, loose: different enough that you should pick on purpose. Rus. AF Grey Prot. Coat is a little darker, more saturated than Moon Mist Grey.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Rus. AF Grey Prot. Coat is a little darker, more saturated than Moon Mist Grey.
The same difference applies the other way round: Moon Mist Grey is a little lighter, more muted.
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 Moon Mist Grey on the colour wheel See Rus. AF Grey Prot. Coat on the colour wheel
All matches: Moon Mist Grey equivalents · Rus. AF Grey Prot. Coat equivalents