Elven Gold vs Amber Green

How close are they?

ΔE 23.6, loose: different enough that you should pick on purpose. Amber Green is a little lighter, more muted, cooler than Elven Gold.

Can I use Amber Green instead of Elven Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Amber Green is a little lighter, more muted, cooler than Elven Gold.

Can I use Elven Gold instead of Amber Green?

The same difference applies the other way round: Elven Gold is a little darker, 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.