Jewel palette
Copper Grove
From #1a2c9a ink through #3c5ac4, #5476e3, #6888e5 to #85a5ff light, Copper Grove is a triadic progression that holds together at any size. Use it for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
skyjewelfive-stophigh-contrast
#1a2c9a
#3c5ac4
#5476e3
#6888e5
#85a5ff
The generator opens with #1a2c9a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.