Opera palette
Oat Delta
Five opera stops with room to breathe — #004767 grounds, #0070a0 and #308bbd do the talking, #539ac4 softens, #6fb6e2 lifts. The complementary bones keep it coherent across museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#004767
#0070a0
#308bbd
#539ac4
#6fb6e2
The generator opens with #004767 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.