Jewel palette
Cranberry Lighthouse
From #004557 ink through #006f8a, #308aa6, #5198b0 to #6eb4cc light, Cranberry Lighthouse is a tetradic progression that holds together at any size. Use it for newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
cyanjewelfive-stophigh-contrast
#004557
#006f8a
#308aa6
#5198b0
#6eb4cc
The generator opens with #004557 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.