Nebula palette
Pewter Bookshop
Five nebula stops with room to breathe — #00547d grounds, #1a7eb4 and #3e9ad1 do the talking, #60a9d8 softens, #7cc5f6 lifts. The analogous bones keep it coherent across packaging that photographs well under harsh retail light. The darkest and lightest stops clear AA for large text.
skynebulafive-stop
#00547d
#1a7eb4
#3e9ad1
#60a9d8
#7cc5f6
The generator opens with #00547d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.