Opera palette
Gleaming Cottage
Five opera stops with room to breathe — #004361 grounds, #006c99 and #2f87b6 do the talking, #5195bd softens, #6db2db lifts. The tetradic bones keep it coherent across newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#004361
#006c99
#2f87b6
#5195bd
#6db2db
The generator opens with #004361 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.