ΔE 19.3, loose: different enough that you should pick on purpose. Cream White is noticeably darker, more saturated than White Star.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Cream White is noticeably darker, more saturated than White Star.
The same difference applies the other way round: White Star is noticeably lighter, more muted.
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 White Star on the colour wheel See Cream White on the colour wheel
All matches: White Star equivalents · Cream White equivalents