Jewel palette
Copper Cellar
From #164180 ink through #406aa9, #5a85c6, #6f95cd to #8ab1eb light, Copper Cellar is a tetradic progression that holds together at any size. Use it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA as a text pair.
skyjewelfive-stophigh-contrast
#164180
#406aa9
#5a85c6
#6f95cd
#8ab1eb
The generator opens with #164180 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.