Hoard Bronze vs Chaos Bronze

How close are they?

ΔE 19.0, loose: different enough that you should pick on purpose. Chaos Bronze is a little lighter, much more muted, warmer than Hoard Bronze.

Can I use Chaos Bronze instead of Hoard Bronze?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Chaos Bronze is a little lighter, much more muted, warmer than Hoard Bronze.

Can I use Hoard Bronze instead of Chaos Bronze?

The same difference applies the other way round: Hoard Bronze is a little darker, much 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.