Blue Hour palette
Marble Marsh
Five stops tuned to sit together without fighting — #004556 ink anchors the set, #6eb4cb opens it up, and #006f88, #308aa4, #5198ae cross the middle in a monochromatic arrangement. Marble Marsh suits newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
cyanbluehourfive-stophigh-contrast
#004556
#006f88
#308aa4
#5198ae
#6eb4cb
The generator opens with #004556 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.