ΔE 17.2, loose: different enough that you should pick on purpose. Grey Brown is more muted, cooler than Dark Honey.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Grey Brown is more muted, cooler than Dark Honey.
The same difference applies the other way round: Dark Honey is more saturated, 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 Honey on the colour wheel See Grey Brown on the colour wheel
All matches: Dark Honey equivalents · Grey Brown equivalents