ΔE 14.1, fair: the same colour family, but not a straight swap. Vulcan Orange is a little darker, much more saturated than Deathclaw Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Vulcan Orange is a little darker, much more saturated than Deathclaw Brown.
The same difference applies the other way round: Deathclaw Brown is a little lighter, much 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.
See Deathclaw Brown on the colour wheel See Vulcan Orange on the colour wheel
All matches: Deathclaw Brown equivalents · Vulcan Orange equivalents