ΔE 23.7, loose: different enough that you should pick on purpose. Carroburg Crimson is a little lighter, more muted, cooler than Red Tone.
✓ Two Thin Coats comparison chart lists these two as equivalents.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Carroburg Crimson is a little lighter, more muted, cooler than Red Tone.
The same difference applies the other way round: Red Tone is a little darker, 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 Red Tone on the colour wheel See Carroburg Crimson on the colour wheel
All matches: Red Tone equivalents · Carroburg Crimson equivalents