Opera palette
Copper Garret
From #005679 ink through #0080b3, #349cd0, #5aaad8 to #77c7f6 light, Copper Garret is a analogous progression that holds together at any size. Use it for newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA for large text.
skyoperafive-stop
#005679
#0080b3
#349cd0
#5aaad8
#77c7f6
The generator opens with #005679 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.