Tropical palette
Halcyon Estuary
Five stops tuned to sit together without fighting — #2c5d00 ink anchors the set, #94d272 opens it up, and #458b00, #60a730, #78b456 cross the middle in a tetradic arrangement. Halcyon Estuary suits newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA for large text.
chartreusetropicalfive-stop
#2c5d00
#458b00
#60a730
#78b456
#94d272
The generator opens with #2c5d00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.