Lucky 38 vs Temple Guard Blue

How close are they?

ΔE 13.5, fair: the same colour family, but not a straight swap. Temple Guard Blue is more saturated, cooler than Lucky 38.

Can I use Temple Guard Blue instead of Lucky 38?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Temple Guard Blue is more saturated, cooler than Lucky 38.

Can I use Lucky 38 instead of Temple Guard Blue?

The same difference applies the other way round: Lucky 38 is 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.