ΔE 17.0, loose: different enough that you should pick on purpose. Light Brown is noticeably lighter, more saturated, warmer than Sharpnel Red.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Brown is noticeably lighter, more saturated, warmer than Sharpnel Red.
The same difference applies the other way round: Sharpnel Red is noticeably darker, 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 Sharpnel Red on the colour wheel See Light Brown on the colour wheel
All matches: Sharpnel Red equivalents · Light Brown equivalents