Shikon violet is the only brand color, one shade per theme.

Shikon, light theme     #5c3b7e
Shikon, dark theme      #b9a3e0
Ink                     oklch(0.141 0.005 285.823)
Paper                   #ffffff
Hanko (ceremonial)      #c83e2d

Everything else is zinc neutral. One accent, no gradients.
