Nebula palette
Polar Courtyard
Five nebula stops with room to breathe — #004e4a grounds, #007a74 and #32958f do the talking, #55a29c softens, #72bfb8 lifts. The analogous bones keep it coherent across newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
cyannebulafive-stophigh-contrast
#004e4a
#007a74
#32958f
#55a29c
#72bfb8
The generator opens with #004e4a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.