ΔE 48.9, loose: different enough that you should pick on purpose. Clear Red is a little lighter, much more saturated, cooler than Astorath Red.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 49). Clear Red is a little lighter, much more saturated, cooler than Astorath Red.
The same difference applies the other way round: Astorath Red is a little darker, much more muted, 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 Astorath Red on the colour wheel See Clear Red on the colour wheel
All matches: Astorath Red equivalents · Clear Red equivalents