Opera palette
Timbered Garret
From #004661 ink through #006f98, #308ab4, #5298bd to #6eb5da light, Timbered Garret is a tetradic progression that holds together at any size. Use it for podcast cover art at sixty pixels square. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#004661
#006f98
#308ab4
#5298bd
#6eb5da
The generator opens with #004661 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.