Old Red vs Fey Pink

How close are they?

ΔE 12.7, fair: the same colour family, but not a straight swap. Fey Pink is a little lighter, cooler than Old Red.

Can I use Fey Pink instead of Old Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Fey Pink is a little lighter, cooler than Old Red.

Can I use Old Red instead of Fey Pink?

The same difference applies the other way round: Old Red is a little darker, 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.