ΔE 18.6, loose: different enough that you should pick on purpose. Emperor Red is a little lighter, much more muted, cooler than True Blood.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Emperor Red is a little lighter, much more muted, cooler than True Blood.
The same difference applies the other way round: True Blood is a little darker, much 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 True Blood on the colour wheel See Emperor Red on the colour wheel
All matches: True Blood equivalents · Emperor Red equivalents