ΔE 10.5, fair: the same colour family, but not a straight swap. White Grey is a little darker, more muted, warmer than Rotten Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). White Grey is a little darker, more muted, warmer than Rotten Green.
The same difference applies the other way round: Rotten Green 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 Rotten Green on the colour wheel See White Grey on the colour wheel
All matches: Rotten Green equivalents · White Grey equivalents