Dark Emerald vs Deathless Metal

How close are they?

ΔE 28.0, loose: different enough that you should pick on purpose. Deathless Metal is a little darker, more muted, warmer than Dark Emerald.

Can I use Deathless Metal instead of Dark Emerald?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 28). Deathless Metal is a little darker, more muted, warmer than Dark Emerald.

Can I use Dark Emerald instead of Deathless Metal?

The same difference applies the other way round: Dark Emerald is a little lighter, more saturated, 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.