Greenish White vs Grotesque Green

How close are they?

ΔE 13.2, fair: the same colour family, but not a straight swap. Grotesque Green is noticeably darker than Greenish White.

Can I use Grotesque Green instead of Greenish White?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Grotesque Green is noticeably darker than Greenish White.

Can I use Greenish White instead of Grotesque Green?

The same difference applies the other way round: Greenish White is noticeably lighter.

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.