ΔE 14.8, fair: the same colour family, but not a straight swap. Freezing Moon is a little lighter, more saturated than Uniform Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Freezing Moon is a little lighter, more saturated than Uniform Grey.
The same difference applies the other way round: Uniform 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 Uniform Grey on the colour wheel See Freezing Moon on the colour wheel
All matches: Uniform Grey equivalents · Freezing Moon equivalents