Hoplite Gold vs Dragon's Gold

How close are they?

ΔE 16.2, loose: different enough that you should pick on purpose. Dragon's Gold is a little lighter, much more muted than Hoplite Gold.

Can I use Dragon's Gold instead of Hoplite Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Dragon's Gold is a little lighter, much more muted than Hoplite Gold.

Can I use Hoplite Gold instead of Dragon's Gold?

The same difference applies the other way round: Hoplite Gold is a little darker, much more saturated.

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.