Acid palette
Rocky Boulevard
Dark anchor, working middle, light release: #004554, #006f85, #308aa1, #5198ab, #6db4c8 form a tetradic acid set with somewhere to stand at every lightness. Made for newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
cyanacidfive-stophigh-contrast
#004554
#006f85
#308aa1
#5198ab
#6db4c8
The generator opens with #004554 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.