Blue Hour palette
Harbor Bookshop
Harbor Bookshop runs #005164 through #007c97, #3397b3, #58a5bd to #74c2da in five measured steps, the complementary structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanbluehourfive-stop
#005164
#007c97
#3397b3
#58a5bd
#74c2da
The generator opens with #005164 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.