Blue Hour palette
Opal Hollow
From #006196 ink through #398bc5, #57a7e3, #74b6ea to #9bd3ff light, Opal Hollow is a analogous progression that holds together at any size. Use it for podcast cover art at sixty pixels square. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#006196
#398bc5
#57a7e3
#74b6ea
#9bd3ff
The generator opens with #006196 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.