ΔE 12.7, fair: the same colour family, but not a straight swap. Frozen Flesh is a little lighter, more muted than Muddy Clay.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Frozen Flesh is a little lighter, more muted than Muddy Clay.
The same difference applies the other way round: Muddy Clay is a little darker, more saturated.
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 Muddy Clay on the colour wheel See Frozen Flesh on the colour wheel
All matches: Muddy Clay equivalents · Frozen Flesh equivalents