Nebula palette
Iris Reef
From #005073 ink through #007aac, #3396c9, #57a4d0 to #74c1ee light, Iris Reef is a complementary progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skynebulafive-stop
#005073
#007aac
#3396c9
#57a4d0
#74c1ee
The generator opens with #005073 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.