Monochrome palette
Cinder Reef
Cinder Reef runs #004b7a through #2a74ac, #478fc9, #639ed0 to #7fbbee in five measured steps, the tetradic structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skymonochromefive-stop
#004b7a
#2a74ac
#478fc9
#639ed0
#7fbbee
The generator opens with #004b7a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.