Nebula palette
Lavender Bluff
Five nebula stops with room to breathe — #00615a grounds, #008e85 and #37aaa0 do the talking, #5fb7ae softens, #7cd4cb 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.
tealnebulafive-stop
#00615a
#008e85
#37aaa0
#5fb7ae
#7cd4cb
The generator opens with #00615a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.