Sekkasshoku Brown

CSS

:root {
  --sekkasshoku-brown: #683f36;
  --sekkasshoku-brown-rgb: 104 63 54;
  --sekkasshoku-brown-oklch: oklch(0.414 0.06 33.1);
}

.element {
  color: var(--sekkasshoku-brown);
  background-color: hsl(11 32% 31%);
  border-color: oklch(0.414 0.06 33.1);
}

Tailwind CSS v4

@theme {
  --color-sekkasshoku-brown: #683f36;
  --color-sekkasshoku-brown-50: #fff0ea;
  --color-sekkasshoku-brown-100: #fbe1db;
  --color-sekkasshoku-brown-200: #edccc3;
  --color-sekkasshoku-brown-300: #d4ada3;
  --color-sekkasshoku-brown-400: #bf9288;
  --color-sekkasshoku-brown-500: #aa786d;
  --color-sekkasshoku-brown-600: #90665c;
  --color-sekkasshoku-brown-700: #735149;
  --color-sekkasshoku-brown-800: #553b36;
  --color-sekkasshoku-brown-900: #3c2825;
  --color-sekkasshoku-brown-950: #251613;
}

SCSS

$sekkasshoku-brown: #683f36;
$sekkasshoku-brown-rgb: 104, 63, 54;
$sekkasshoku-brown-light: mix(#fff, $sekkasshoku-brown, 20%);
$sekkasshoku-brown-dark: mix(#000, $sekkasshoku-brown, 20%);

.element {
  color: $sekkasshoku-brown;
  box-shadow: 0 0 0 2px rgba($sekkasshoku-brown, 0.35);
}