ΔE 9.0, close: similar, with a visible difference side by side. Thunderhawk Blue is a little darker, more muted, cooler than Thunderous Blue.
✓ Two Thin Coats comparison chart lists these two as equivalents.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Thunderhawk Blue is a little darker, more muted, cooler than Thunderous Blue.
The same difference applies the other way round: Thunderous Blue is a little lighter, more saturated, 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.
See Thunderous Blue on the colour wheel See Thunderhawk Blue on the colour wheel
All matches: Thunderous Blue equivalents · Thunderhawk Blue equivalents