ΔE 14.9, fair: the same colour family, but not a straight swap. Warm Grey is a little darker, more muted, warmer than Pink Potion.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Warm Grey is a little darker, more muted, warmer than Pink Potion.
The same difference applies the other way round: Pink Potion is a little lighter, 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 Potion on the colour wheel See Warm Grey on the colour wheel
All matches: Pink Potion equivalents · Warm Grey equivalents