Nebula palette
Rosy Library
Five nebula stops with room to breathe — #004861 grounds, #0b7296 and #348db2 do the talking, #569bbb softens, #72b8d8 lifts. The monochromatic bones keep it coherent across event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
cyannebulafive-stophigh-contrast
#004861
#0b7296
#348db2
#569bbb
#72b8d8
The generator opens with #004861 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.