Ocean palette
Terracotta Hollow
From #004849 ink through #007374, #308e8f, #529b9b to #6fb7b8 light, Terracotta Hollow is a split-complementary progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
cyanoceanfive-stophigh-contrast
#004849
#007374
#308e8f
#529b9b
#6fb7b8
The generator opens with #004849 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.