ΔE 63.0, loose: different enough that you should pick on purpose. Ink White is noticeably lighter, much more muted than Phoenix Orange.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 63). Ink White is noticeably lighter, much more muted than Phoenix Orange.
The same difference applies the other way round: Phoenix Orange is noticeably darker, much more saturated.
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 Phoenix Orange on the colour wheel See Ink White on the colour wheel
All matches: Phoenix Orange equivalents · Ink White equivalents