ΔE 31.3, loose: different enough that you should pick on purpose. Violet Wash is noticeably lighter than Purple Tone.
✓ Two Thin Coats comparison chart lists these two as equivalents.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 31). Violet Wash is noticeably lighter than Purple Tone.
The same difference applies the other way round: Purple Tone is noticeably darker.
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 Purple Tone on the colour wheel See Violet Wash on the colour wheel
All matches: Purple Tone equivalents · Violet Wash equivalents