Hoard Bronze vs Twin Sons

How close are they?

ΔE 45.7, loose: different enough that you should pick on purpose. Twin Sons is a little lighter, much more saturated, cooler than Hoard Bronze.

Can I use Twin Sons instead of Hoard Bronze?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 46). Twin Sons is a little lighter, much more saturated, cooler than Hoard Bronze.

Can I use Hoard Bronze instead of Twin Sons?

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