Daylight palette
Glassy Brook
Five daylight stops with room to breathe — #004a51 grounds, #007580 and #31909b do the talking, #549ea7 softens, #70bac3 lifts. The analogous bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
cyandaylightfive-stophigh-contrast
#004a51
#007580
#31909b
#549ea7
#70bac3
The generator opens with #004a51 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.