Nebula palette
Ebony Dock
Five nebula stops with room to breathe — #00524e grounds, #007e79 and #339994 do the talking, #57a7a1 softens, #74c3be lifts. The tetradic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyannebulafive-stop
#00524e
#007e79
#339994
#57a7a1
#74c3be
The generator opens with #00524e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.