Sumi palette
Crimson Boulevard
Crimson Boulevard runs #9c1600 through #b5301b, #007485, #d44f38 to #0091a5 in five measured steps, the analogous structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size.
redsumifive-stop
#9c1600
#b5301b
#007485
#d44f38
#0091a5
The generator opens with #9c1600 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.