#384300

CSS

:root {
  --dark-olive: #384300;
  --dark-olive-rgb: 56 67 0;
  --dark-olive-oklch: oklch(0.36 0.085 119.7);
}

.element {
  color: var(--dark-olive);
  background-color: hsl(70 100% 13%);
  border-color: oklch(0.36 0.085 119.7);
}

Tailwind CSS v4

@theme {
  --color-dark-olive: #384300;
  --color-dark-olive-50: #f1f9df;
  --color-dark-olive-100: #e3edce;
  --color-dark-olive-200: #cedbb2;
  --color-dark-olive-300: #b0bf8e;
  --color-dark-olive-400: #98a66c;
  --color-dark-olive-500: #7f8e4b;
  --color-dark-olive-600: #6c7940;
  --color-dark-olive-700: #566033;
  --color-dark-olive-800: #404623;
  --color-dark-olive-900: #2c3117;
  --color-dark-olive-950: #191d08;
}

SCSS

$dark-olive: #384300;
$dark-olive-rgb: 56, 67, 0;
$dark-olive-light: mix(#fff, $dark-olive, 20%);
$dark-olive-dark: mix(#000, $dark-olive, 20%);

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