Jewel palette
Walnut Brook
Five stops tuned to sit together without fighting — #003c78 ink anchors the set, #68aafc opens it up, and #0061bc, #2b7dda, #4c8edd cross the middle in a tetradic arrangement. Walnut Brook suits book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skyjewelfive-stophigh-contrast
#003c78
#0061bc
#2b7dda
#4c8edd
#68aafc
The generator opens with #003c78 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.