Monochrome palette
Sumac Atelier
From #1a6197 ink through #4c8bc1, #68a7df, #81b6e6 to #a2d3ff light, Sumac Atelier is a tetradic 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.
skymonochromefive-stop
#1a6197
#4c8bc1
#68a7df
#81b6e6
#a2d3ff
The generator opens with #1a6197 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.