#7E7716

CSS

:root {
  --olive: #7e7716;
  --olive-rgb: 126 119 22;
  --olive-oklch: oklch(0.558 0.111 105.1);
}

.element {
  color: var(--olive);
  background-color: hsl(56 70% 29%);
  border-color: oklch(0.558 0.111 105.1);
}

Tailwind CSS v4

@theme {
  --color-olive: #7e7716;
  --color-olive-50: #f8f8d4;
  --color-olive-100: #ebebc1;
  --color-olive-200: #d9d8a1;
  --color-olive-300: #bdbc78;
  --color-olive-400: #a8a24f;
  --color-olive-500: #918a1d;
  --color-olive-600: #7b741c;
  --color-olive-700: #625d17;
  --color-olive-800: #49440d;
  --color-olive-900: #332f08;
  --color-olive-950: #1f1b00;
}

SCSS

$olive: #7e7716;
$olive-rgb: 126, 119, 22;
$olive-light: mix(#fff, $olive, 20%);
$olive-dark: mix(#000, $olive, 20%);

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