Gremlin Green vs Dark Green (JGSDF)

How close are they?

ΔE 13.1, fair: the same colour family, but not a straight swap. Dark Green (JGSDF) is more muted, cooler than Gremlin Green.

Can I use Dark Green (JGSDF) instead of Gremlin Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Dark Green (JGSDF) is more muted, cooler than Gremlin Green.

Can I use Gremlin Green instead of Dark Green (JGSDF)?

The same difference applies the other way round: Gremlin Green is more saturated, warmer.

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.