Nebula palette
Halcyon Caravan
From #005853 ink through #00857e, #35a199, #5baea7 to #78cbc3 light, Halcyon Caravan is a triadic progression that holds together at any size. Use it for newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA for large text.
cyannebulafive-stop
#005853
#00857e
#35a199
#5baea7
#78cbc3
The generator opens with #005853 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.