Grotesque Green vs 'Jack Bone

How close are they?

ΔE 11.2, fair: the same colour family, but not a straight swap. 'Jack Bone is a little lighter, more saturated, warmer than Grotesque Green.

Can I use 'Jack Bone instead of Grotesque Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). 'Jack Bone is a little lighter, more saturated, warmer than Grotesque Green.

Can I use Grotesque Green instead of 'Jack Bone?

The same difference applies the other way round: Grotesque Green is a little darker, more muted, 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.