#472829

CSS

:root {
  --dark-roast: #472829;
  --dark-roast-rgb: 71 40 41;
  --dark-roast-oklch: oklch(0.317 0.047 18);
}

.element {
  color: var(--dark-roast);
  background-color: hsl(358 28% 22%);
  border-color: oklch(0.317 0.047 18);
}

Tailwind CSS v4

@theme {
  --color-dark-roast: #472829;
  --color-dark-roast-50: #fff0f0;
  --color-dark-roast-100: #f7e2e1;
  --color-dark-roast-200: #e8cdcc;
  --color-dark-roast-300: #ceaeae;
  --color-dark-roast-400: #b99494;
  --color-dark-roast-500: #a37a7a;
  --color-dark-roast-600: #8a6768;
  --color-dark-roast-700: #6e5353;
  --color-dark-roast-800: #513c3d;
  --color-dark-roast-900: #39292a;
  --color-dark-roast-950: #231717;
}

SCSS

$dark-roast: #472829;
$dark-roast-rgb: 71, 40, 41;
$dark-roast-light: mix(#fff, $dark-roast, 20%);
$dark-roast-dark: mix(#000, $dark-roast, 20%);

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