Tidal Blue vs Ahriman Blue

How close are they?

ΔE 6.0, close: similar, with a visible difference side by side. Ahriman Blue is more muted than Tidal Blue.

✓ Army Painter Fanatic conversion chart lists these two as equivalents.

Can I use Ahriman Blue instead of Tidal Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Ahriman Blue is more muted than Tidal Blue.

Can I use Tidal Blue instead of Ahriman Blue?

The same difference applies the other way round: Tidal Blue is more saturated.

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.