Dwarf Shield vs Arcane Gold

How close are they?

ΔE 7.1, close: similar, with a visible difference side by side. Arcane Gold is more muted than Dwarf Shield.

Can I use Arcane Gold instead of Dwarf Shield?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Arcane Gold is more muted than Dwarf Shield.

Can I use Dwarf Shield instead of Arcane Gold?

The same difference applies the other way round: Dwarf Shield is 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.