Hardened Carapace vs Burnt Umber

How close are they?

ΔE 5.5, very close: most people won’t see a difference side by side. Burnt Umber is a little lighter, more saturated than Hardened Carapace.

Can I use Burnt Umber instead of Hardened Carapace?

Yes, for most jobs. Very close match (ΔE 5). Burnt Umber is a little lighter, more saturated than Hardened Carapace.

Can I use Hardened Carapace instead of Burnt Umber?

The same difference applies the other way round: Hardened Carapace is a little darker, more muted.

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.