Aurora palette
Melon Dune
Five aurora stops with room to breathe — #426ba4 grounds, #007597 and #007a7c do the talking, #3190b3 softens, #159799 lifts. The monochromatic bones keep it coherent across book covers that read at thumbnail size.
cyanaurorafive-stop
#426ba4
#007597
#007a7c
#3190b3
#159799
The generator opens with #426ba4 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.