ΔE 5.6, very close: most people won’t see a difference side by side. Burnt Umber is a little lighter, cooler than Dark Shadow.
Yes, for most jobs. Very close match (ΔE 6). Burnt Umber is a little lighter, cooler than Dark Shadow.
The same difference applies the other way round: Dark Shadow is a little darker, 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.
See Dark Shadow on the colour wheel See Burnt Umber on the colour wheel
All matches: Dark Shadow equivalents · Burnt Umber equivalents