ΔE 17.9, loose: different enough that you should pick on purpose. N7 Neutral Gray is a little darker, much more muted than Ice Storm.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). N7 Neutral Gray is a little darker, much more muted than Ice Storm.
The same difference applies the other way round: Ice Storm is a little lighter, much more saturated.
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 Ice Storm on the colour wheel See N7 Neutral Gray on the colour wheel
All matches: Ice Storm equivalents · N7 Neutral Gray equivalents