Nebula palette
Restful Brook
From #6a2400 ink through #a53f0a, #c35b2e, #cb714d to #ea8d68 light, Restful Brook is a monochromatic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
orangenebulafive-stophigh-contrast
#6a2400
#a53f0a
#c35b2e
#cb714d
#ea8d68
The generator opens with #6a2400 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.