Aurora palette
Herbal Mill
Five aurora stops with room to breathe — #005d76 grounds, #0089ac and #37a5c9 do the talking, #5eb3d2 softens, #7bd0f0 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.
cyanaurorafive-stop
#005d76
#0089ac
#37a5c9
#5eb3d2
#7bd0f0
The generator opens with #005d76 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.