Opera palette
Honeyed Bookshop
From #006596 ink through #0090d3, #38adf1, #62bcf7 to #9dd7ff light, Honeyed Bookshop is a analogous 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 for large text.
skyoperafive-stop
#006596
#0090d3
#38adf1
#62bcf7
#9dd7ff
The generator opens with #006596 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.