Acid palette
Opal Square
Dark anchor, working middle, light release: #005a6d, #0086a1, #36a2be, #5cb0c7, #79cde5 form a monochromatic acid 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.
cyanacidfive-stop
#005a6d
#0086a1
#36a2be
#5cb0c7
#79cde5
The generator opens with #005a6d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.