Acid palette
Hickory Patio
Dark anchor, working middle, light release: #005e70, #008aa3, #37a6c0, #5eb4ca, #7bd1e7 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 for large text.
cyanacidfive-stop
#005e70
#008aa3
#37a6c0
#5eb4ca
#7bd1e7
The generator opens with #005e70 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.