Nebula palette
Polar Boulevard
Five stops tuned to sit together without fighting — #7f0062 ink anchors the set, #f789d2 opens it up, and #b1348e, #d052aa, #d86db5 cross the middle in a tetradic arrangement. Polar Boulevard suits book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
magentanebulafive-stophigh-contrast
#7f0062
#b1348e
#d052aa
#d86db5
#f789d2
The generator opens with #7f0062 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.