Blue Hour palette
Oat Reef
From #005573 ink through #0080ab, #349cc8, #5aaad0 to #77c7ee light, Oat Reef is a complementary 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 for large text.
cyanbluehourfive-stop
#005573
#0080ab
#349cc8
#5aaad0
#77c7ee
The generator opens with #005573 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.