Tropical palette
Butter Fen
Dark anchor, working middle, light release: #006b6d, #05999b, #3cb5b7, #65c3c4, #83e0e1 form a tetradic tropical set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyantropicalfive-stop
#006b6d
#05999b
#3cb5b7
#65c3c4
#83e0e1
The generator opens with #006b6d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.