Jewel palette
Twilit Manor
Five jewel stops with room to breathe — #007183 grounds, #009fb7 and #3cbcd4 do the talking, #68c9de softens, #86e7fc lifts. The tetradic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanjewelfive-stop
#007183
#009fb7
#3cbcd4
#68c9de
#86e7fc
The generator opens with #007183 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.