ΔE 24.1, loose: different enough that you should pick on purpose. Gauss Blaster Green is noticeably lighter, more muted, warmer than Baby Blue.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Gauss Blaster Green is noticeably lighter, more muted, warmer than Baby Blue.
The same difference applies the other way round: Baby Blue is noticeably darker, more saturated, cooler.
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 Baby Blue on the colour wheel See Gauss Blaster Green on the colour wheel
All matches: Baby Blue equivalents · Gauss Blaster Green equivalents