Nebula palette
Malty Hollow
Five nebula stops with room to breathe — #006a67 grounds, #009894 and #3ab4b0 do the talking, #64c1bd softens, #81dfda 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
#006a67
#009894
#3ab4b0
#64c1bd
#81dfda
The generator opens with #006a67 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.