Blue Hour palette
Butter Cellar
From #004a81 ink through #2c73b3, #498ed1, #649ed7 to #80baf5 light, Butter Cellar is a complementary progression that holds together at any size. Use it for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#004a81
#2c73b3
#498ed1
#649ed7
#80baf5
The generator opens with #004a81 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.