Jewel palette
Poppy Bookshop
Five jewel stops with room to breathe — #006f8d grounds, #009cc4 and #3bb9e2 do the talking, #67c7ea softens, #97e2ff lifts. The triadic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanjewelfive-stop
#006f8d
#009cc4
#3bb9e2
#67c7ea
#97e2ff
The generator opens with #006f8d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.