Petrichor palette
Umber Cottage
Umber Cottage runs #004b4e through #00767b, #319196, #549ea2 to #70bbbf in five measured steps, the split-complementary structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
cyanpetrichorfive-stophigh-contrast
#004b4e
#00767b
#319196
#549ea2
#70bbbf
The generator opens with #004b4e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.