Jewel palette
Polar Atelier
Dark anchor, working middle, light release: #17368a, #3d60b4, #567bd2, #6b8cd6, #85a8f5 form a complementary jewel set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skyjewelfive-stophigh-contrast
#17368a
#3d60b4
#567bd2
#6b8cd6
#85a8f5
The generator opens with #17368a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.