Jewel palette
Dusty Depot
Dark anchor, working middle, light release: #00455b, #006f8f, #308aab, #5298b4, #6eb4d1 form a monochromatic 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 as a text pair.
cyanjewelfive-stophigh-contrast
#00455b
#006f8f
#308aab
#5298b4
#6eb4d1
The generator opens with #00455b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.