Nebula palette
Ebony Harbor
Five nebula stops with room to breathe — #0051b4 grounds, #327ce7 and #559aff do the talking, #73abff softens, #a4c9ff lifts. The complementary bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skynebulafive-stop
#0051b4
#327ce7
#559aff
#73abff
#a4c9ff
The generator opens with #0051b4 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.