Yellow Green FS-34259 vs Elysian Green

How close are they?

ΔE 10.8, fair: the same colour family, but not a straight swap. Elysian Green is more saturated, cooler than Yellow Green FS-34259.

Can I use Elysian Green instead of Yellow Green FS-34259?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Elysian Green is more saturated, cooler than Yellow Green FS-34259.

Can I use Yellow Green FS-34259 instead of Elysian Green?

The same difference applies the other way round: Yellow Green FS-34259 is more muted, 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.