Nebula palette
Gleaming Crater
Five nebula stops with room to breathe — #005270 grounds, #007ca8 and #3398c5 do the talking, #58a6cd softens, #75c3eb lifts. The tetradic bones keep it coherent across national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
skynebulafive-stop
#005270
#007ca8
#3398c5
#58a6cd
#75c3eb
The generator opens with #005270 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.