Dark Blue-Grey vs Elf Green

How close are they?

ΔE 11.7, fair: the same colour family, but not a straight swap. Elf Green is a little darker, more saturated, warmer than Dark Blue-Grey.

Can I use Elf Green instead of Dark Blue-Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Elf Green is a little darker, more saturated, warmer than Dark Blue-Grey.

Can I use Dark Blue-Grey instead of Elf Green?

The same difference applies the other way round: Dark Blue-Grey is a little lighter, 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.