ΔE 20.2, loose: different enough that you should pick on purpose. Warm Grey is much more muted, warmer than Pink.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Warm Grey is much more muted, warmer than Pink.
The same difference applies the other way round: Pink is much more saturated, cooler.
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 Pink on the colour wheel See Warm Grey on the colour wheel
All matches: Pink equivalents · Warm Grey equivalents