#43332A

CSS

:root {
  --dark-rum: #43332a;
  --dark-rum-rgb: 67 51 42;
  --dark-rum-oklch: oklch(0.336 0.028 50.8);
}

.element {
  color: var(--dark-rum);
  background-color: hsl(22 23% 21%);
  border-color: oklch(0.336 0.028 50.8);
}

Tailwind CSS v4

@theme {
  --color-dark-rum: #43332a;
  --color-dark-rum-50: #fcf3ee;
  --color-dark-rum-100: #f0e6df;
  --color-dark-rum-200: #ded1ca;
  --color-dark-rum-300: #c4b4ab;
  --color-dark-rum-400: #ad9a90;
  --color-dark-rum-500: #968176;
  --color-dark-rum-600: #7f6d64;
  --color-dark-rum-700: #665850;
  --color-dark-rum-800: #4b403a;
  --color-dark-rum-900: #342c28;
  --color-dark-rum-950: #1f1916;
}

SCSS

$dark-rum: #43332a;
$dark-rum-rgb: 67, 51, 42;
$dark-rum-light: mix(#fff, $dark-rum, 20%);
$dark-rum-dark: mix(#000, $dark-rum, 20%);

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