ΔE 14.4, fair: the same colour family, but not a straight swap. Frozen Flesh is more muted, cooler than Red Rage.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Frozen Flesh is more muted, cooler than Red Rage.
The same difference applies the other way round: Red Rage 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 Red Rage on the colour wheel See Frozen Flesh on the colour wheel
All matches: Red Rage equivalents · Frozen Flesh equivalents