#8F8F54

CSS

:root {
  --green-olive: #8f8f54;
  --green-olive-rgb: 143 143 84;
  --green-olive-oklch: oklch(0.636 0.08 108.5);
}

.element {
  color: var(--green-olive);
  background-color: hsl(60 26% 45%);
  border-color: oklch(0.636 0.08 108.5);
}

Tailwind CSS v4

@theme {
  --color-green-olive: #8f8f54;
  --color-green-olive-50: #f6f8de;
  --color-green-olive-100: #e9ebcc;
  --color-green-olive-200: #d5d8b1;
  --color-green-olive-300: #b9bc8c;
  --color-green-olive-400: #a2a36a;
  --color-green-olive-500: #8b8a48;
  --color-green-olive-600: #75753e;
  --color-green-olive-700: #5e5e31;
  --color-green-olive-800: #464422;
  --color-green-olive-900: #302f16;
  --color-green-olive-950: #1d1c08;
}

SCSS

$green-olive: #8f8f54;
$green-olive-rgb: 143, 143, 84;
$green-olive-light: mix(#fff, $green-olive, 20%);
$green-olive-dark: mix(#000, $green-olive, 20%);

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