Blue Hour palette
Lingering Square
Five blue hour stops with room to breathe — #00639a grounds, #008ed9 and #38abf8 do the talking, #61bafc softens, #a1d5ff 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 for large text.
skybluehourfive-stop
#00639a
#008ed9
#38abf8
#61bafc
#a1d5ff
The generator opens with #00639a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.