Monochrome palette
River Bookshop
Five monochrome stops with room to breathe — #007182 grounds, #179eb4 and #43bbd1 do the talking, #6bc8db softens, #89e6f9 lifts. The tetradic bones keep it coherent across packaging that photographs well under harsh retail light. The darkest and lightest stops clear AA for large text.
cyanmonochromefive-stop
#007182
#179eb4
#43bbd1
#6bc8db
#89e6f9
The generator opens with #007182 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.