ΔE 11.2, fair: the same colour family, but not a straight swap. Sand Grey is noticeably darker, cooler than Hobgoblin Hue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Sand Grey is noticeably darker, cooler than Hobgoblin Hue.
The same difference applies the other way round: Hobgoblin Hue is noticeably lighter, 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 Hobgoblin Hue on the colour wheel See Sand Grey on the colour wheel
All matches: Hobgoblin Hue equivalents · Sand Grey equivalents