Blue Hour palette
Nightfall Brook
Dark anchor, working middle, light release: #873524, #b2604e, #d07b68, #d98f7e, #f7ab9a form a tetradic blue hour set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
redbluehourfive-stop
#873524
#b2604e
#d07b68
#d98f7e
#f7ab9a
The generator opens with #873524 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.