Petrichor palette
Perennial Delta
Perennial Delta runs #004751 through #007281, #308d9c, #529aa7 to #6fb7c4 in five measured steps, the tetradic structure keeping every neighbor honest. Reach for it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA as a text pair.
cyanpetrichorfive-stophigh-contrast
#004751
#007281
#308d9c
#529aa7
#6fb7c4
The generator opens with #004751 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.