Opera palette
Mineral Estuary
Mineral Estuary runs #00416e through #1e69a3, #3d84c0, #5993c7 to #74afe4 in five measured steps, the tetradic structure keeping every neighbor honest. Reach for it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#00416e
#1e69a3
#3d84c0
#5993c7
#74afe4
The generator opens with #00416e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.