ΔE 12.5, fair: the same colour family, but not a straight swap. New Wood is more muted, warmer than Dark Mud.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). New Wood is more muted, warmer than Dark Mud.
The same difference applies the other way round: Dark Mud is 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.
See Dark Mud on the colour wheel See New Wood on the colour wheel
All matches: Dark Mud equivalents · New Wood equivalents