Opera palette
Granite Bookshop
Dark anchor, working middle, light release: #004e71, #0078ab, #3294c8, #56a2cf, #73bfed form a triadic opera set with somewhere to stand at every lightness. Made for tea packaging where the flavor color does the talking. The darkest and lightest stops clear AA for large text.
skyoperafive-stop
#004e71
#0078ab
#3294c8
#56a2cf
#73bfed
The generator opens with #004e71 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.