Old Red vs Light Pink

How close are they?

ΔE 14.3, fair: the same colour family, but not a straight swap. Light Pink is a little darker, more saturated, cooler than Old Red.

Can I use Light Pink instead of Old Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Light Pink is a little darker, more saturated, cooler than Old Red.

Can I use Old Red instead of Light Pink?

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