Jewel palette
Sienna Crater
From #233ba2 ink through #4867cc, #6183eb, #7595ee to #96b3ff light, Sienna Crater is a tetradic 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.
skyjewelfive-stophigh-contrast
#233ba2
#4867cc
#6183eb
#7595ee
#96b3ff
The generator opens with #233ba2 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.