ΔE 15.4, loose: different enough that you should pick on purpose. Surfer Orc Flesh is noticeably darker, more saturated than Amulet Aqua.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Surfer Orc Flesh is noticeably darker, more saturated than Amulet Aqua.
The same difference applies the other way round: Amulet Aqua 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 Amulet Aqua on the colour wheel See Surfer Orc Flesh on the colour wheel
All matches: Amulet Aqua equivalents · Surfer Orc Flesh equivalents