ΔE 23.3, loose: different enough that you should pick on purpose. Sunset Red is noticeably lighter, much more saturated, warmer than Cobalt Violet Hue.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Sunset Red is noticeably lighter, much more saturated, warmer than Cobalt Violet Hue.
The same difference applies the other way round: Cobalt Violet Hue is noticeably darker, much more muted, cooler.
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 Cobalt Violet Hue on the colour wheel See Sunset Red on the colour wheel
All matches: Cobalt Violet Hue equivalents · Sunset Red equivalents