Jewel palette
Ochre Mill
From #005769 ink through #00829c, #359eb8, #5aabc2 to #77c8e0 light, Ochre Mill is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanjewelfive-stop
#005769
#00829c
#359eb8
#5aabc2
#77c8e0
The generator opens with #005769 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.