Monochrome palette
Straw Delta
From #004367 ink through #076ba0, #3186bd, #5295c4 to #6eb1e2 light, Straw Delta 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 as a text pair.
skymonochromefive-stophigh-contrast
#004367
#076ba0
#3186bd
#5295c4
#6eb1e2
The generator opens with #004367 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.