Ocean palette
Mustard Fen
Mustard Fen runs #004964 through #00739a, #318eb6, #549cbf to #70b9dc 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 as a text pair.
cyanoceanfive-stophigh-contrast
#004964
#00739a
#318eb6
#549cbf
#70b9dc
The generator opens with #004964 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.