Pastel palette
Melon Ridge
Five pastel stops with room to breathe — #00378e grounds, #2f62b9 and #497dd7 do the talking, #618edb softens, #7babfa 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.
skypastelfive-stophigh-contrast
#00378e
#2f62b9
#497dd7
#618edb
#7babfa
The generator opens with #00378e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.