Jewel palette
Chalky Chapel
Dark anchor, working middle, light release: #005a75, #0085ab, #36a1c8, #5cafd1, #79ccee form a tetradic jewel 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.
cyanjewelfive-stop
#005a75
#0085ab
#36a1c8
#5cafd1
#79ccee
The generator opens with #005a75 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.