ΔE 25.5, loose: different enough that you should pick on purpose. Chromate Yellow Primer FS33481 is much more saturated, cooler than Karak Stone.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Chromate Yellow Primer FS33481 is much more saturated, cooler than Karak Stone.
The same difference applies the other way round: Karak Stone is 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 Karak Stone on the colour wheel See Chromate Yellow Primer FS33481 on the colour wheel
All matches: Karak Stone equivalents · Chromate Yellow Primer FS33481 equivalents