Aurora palette
Copper Outpost
From #00727f ink through #00a0b1, #3cbdce, #68cad9 to #86e8f7 light, Copper Outpost is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanaurorafive-stop
#00727f
#00a0b1
#3cbdce
#68cad9
#86e8f7
The generator opens with #00727f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.