Pastel palette
Dusky Chapel
Five pastel stops with room to breathe — #004b48 grounds, #007772 and #31928d do the talking, #549f9a softens, #70bcb6 lifts. The monochromatic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
cyanpastelfive-stophigh-contrast
#004b48
#007772
#31928d
#549f9a
#70bcb6
The generator opens with #004b48 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.