Blue Hour palette
Silken Porch
Five blue hour stops with room to breathe — #003d75 grounds, #0063b7 and #2c7fd5 do the talking, #4d8fd9 softens, #69abf7 lifts. The split-complementary bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skybluehourfive-stophigh-contrast
#003d75
#0063b7
#2c7fd5
#4d8fd9
#69abf7
The generator opens with #003d75 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.