Nebula palette
Calico Square
From #004c4c ink through #007777, #319292, #549f9f to #71bcbb light, Calico Square is a monochromatic 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.
cyannebulafive-stop
#004c4c
#007777
#319292
#549f9f
#71bcbb
The generator opens with #004c4c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.