Yellow Green vs Elysian Green

How close are they?

ΔE 13.4, fair: the same colour family, but not a straight swap. Elysian Green is more muted, cooler than Yellow Green.

Can I use Elysian Green instead of Yellow Green?

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

Can I use Yellow Green instead of Elysian Green?

The same difference applies the other way round: Yellow 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.