Nebula palette
Cobalt Brook
Cobalt Brook runs #005778 through #0082b1, #359ece, #5bacd6 to #78c9f4 in five measured steps, the tetradic 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.