Nebula palette
Lupine Bookshop
From #004564 ink through #136e99, #3789b6, #5697be to #72b4db light, Lupine Bookshop is a monochromatic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skynebulafive-stophigh-contrast
#004564
#136e99
#3789b6
#5697be
#72b4db
The generator opens with #004564 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.