Nebula palette
Windy Cottage
Five nebula stops with room to breathe — #005d89 grounds, #0088c5 and #36a4e3 do the talking, #5eb3e9 softens, #88cfff lifts. The monochromatic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skynebulafive-stop
#005d89
#0088c5
#36a4e3
#5eb3e9
#88cfff
The generator opens with #005d89 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.