Storm palette
Sooty Patio
Dark anchor, working middle, light release: #00465a, #00708e, #308baa, #5299b3, #6eb5d0 form a tetradic storm 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.
cyanstormfive-stophigh-contrast
#00465a
#00708e
#308baa
#5299b3
#6eb5d0
The generator opens with #00465a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.