Nebula palette
Sumac Beacon
Sumac Beacon runs #005778 through #0082b1, #359ece, #5bacd6 to #78c9f4 in five measured steps, the split-complementary structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skynebulafive-stop
#005778
#0082b1
#359ece
#5bacd6
#78c9f4
The generator opens with #005778 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.