Opera palette
Russet Heath
Five opera stops with room to breathe — #00668b grounds, #0092c5 and #39aee3 do the talking, #63bdea softens, #90d9ff lifts. The split-complementary bones keep it coherent across event posters that compete with a wall of other posters. The darkest and lightest stops clear AA for large text.
cyanoperafive-stop
#00668b
#0092c5
#39aee3
#63bdea
#90d9ff
The generator opens with #00668b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.