Opera palette
Steely Cellar
From #005f9a ink through #0089db, #37a6fa, #5fb5fe to #9ed1ff light, Steely Cellar is a tetradic progression that holds together at any size. Use it for craft brewery cans lined up in a cooler door. The darkest and lightest stops clear AA for large text.
skyoperafive-stop
#005f9a
#0089db
#37a6fa
#5fb5fe
#9ed1ff
The generator opens with #005f9a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.