Nebula palette
Mahogany Depot
Five nebula stops with room to breathe — #00607f grounds, #098cb6 and #3aa8d3 do the talking, #61b6db softens, #7ed4f9 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
#00607f
#098cb6
#3aa8d3
#61b6db
#7ed4f9
The generator opens with #00607f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.