Frost Blue vs Blue Horror

How close are they?

ΔE 3.1, very close: most people won’t see a difference side by side. Blue Horror is cooler than Frost Blue.

✓ Two Thin Coats comparison chart lists these two as equivalents.

Can I use Blue Horror instead of Frost Blue?

Yes, for most jobs. Very close match (ΔE 3). Blue Horror is cooler than Frost Blue.

Can I use Frost Blue instead of Blue Horror?

The same difference applies the other way round: Frost Blue is 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.