Blue Hour palette
Iris Reef
From #902300 ink through #c94521, #e96240, #ef7c5e to #ffa38a light, Iris Reef is a analogous progression that holds together at any size. Use it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
redbluehourfive-stop
#902300
#c94521
#e96240
#ef7c5e
#ffa38a
The generator opens with #902300 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.