Tropical palette
Emerald Lagoon
From #90002f ink through #c33a54, #e3586e, #e97381 to #ff96a1 light, Emerald Lagoon is a tetradic progression that holds together at any size. Use it for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA as a text pair.
redtropicalfive-stophigh-contrast
#90002f
#c33a54
#e3586e
#e97381
#ff96a1
The generator opens with #90002f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.