Ocean palette
Leaden Library
Leaden Library runs #00504f through #007c7a, #339795, #57a5a2 to #73c1be 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.
cyanoceanfive-stop
#00504f
#007c7a
#339795
#57a5a2
#73c1be
The generator opens with #00504f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.