Acid palette
Sienna Foundry
Five stops tuned to sit together without fighting — #5f4700 ink anchors the set, #d2b573 opens it up, and #8e6d14, #aa8837, #b59858 cross the middle in a tetradic arrangement. Sienna Foundry suits newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA for large text.
amberacidfive-stop
#5f4700
#8e6d14
#aa8837
#b59858
#d2b573
The generator opens with #5f4700 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.