Temple Guard Blue vs Coal Black

How close are they?

ΔE 19.3, loose: different enough that you should pick on purpose. Coal Black is noticeably darker, more muted, warmer than Temple Guard Blue.

Can I use Coal Black instead of Temple Guard Blue?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Coal Black is noticeably darker, more muted, warmer than Temple Guard Blue.

Can I use Temple Guard Blue instead of Coal Black?

The same difference applies the other way round: Temple Guard Blue is noticeably lighter, more saturated, cooler.

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.