ΔE 9.0, close: similar, with a visible difference side by side. Shadow Red is a little darker, more muted, cooler than Chimera Red.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Shadow Red is a little darker, more muted, cooler than Chimera Red.
The same difference applies the other way round: Chimera Red 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 Chimera Red on the colour wheel See Shadow Red on the colour wheel
All matches: Chimera Red equivalents · Shadow Red equivalents