Opera palette
Copper Depot
From #751c02 ink through #a04933, #be644d, #c67864 to #e5947f light, Copper Depot 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.
redoperafive-stophigh-contrast
#751c02
#a04933
#be644d
#c67864
#e5947f
The generator opens with #751c02 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.