Disco palette
Drowsy Foundry
From #005893 ink through #0081d4, #349df3, #5cadf6 to #91caff light, Drowsy Foundry is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skydiscofive-stop
#005893
#0081d4
#349df3
#5cadf6
#91caff
The generator opens with #005893 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.