Donkey Grey vs White Grey

How close are they?

ΔE 11.2, fair: the same colour family, but not a straight swap. White Grey is noticeably lighter than Donkey Grey.

Can I use White Grey instead of Donkey Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). White Grey is noticeably lighter than Donkey Grey.

Can I use Donkey Grey instead of White Grey?

The same difference applies the other way round: Donkey Grey is noticeably darker.

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.