ΔE 10.6, fair: the same colour family, but not a straight swap. Pale Brown is a little lighter, more saturated than Granite Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Pale Brown is a little lighter, more saturated than Granite Grey.
The same difference applies the other way round: Granite Grey is a little darker, 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 Granite Grey on the colour wheel See Pale Brown on the colour wheel
All matches: Granite Grey equivalents · Pale Brown equivalents