ΔE 15.2, loose: different enough that you should pick on purpose. Light Orange is a little lighter, more saturated, warmer than Scarlett Red.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Light Orange is a little lighter, more saturated, warmer than Scarlett Red.
The same difference applies the other way round: Scarlett Red is a little 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 Scarlett Red on the colour wheel See Light Orange on the colour wheel
All matches: Scarlett Red equivalents · Light Orange equivalents