#787904

CSS

:root {
  --olive: #787904;
  --olive-rgb: 120 121 4;
  --olive-oklch: oklch(0.557 0.121 110.3);
}

.element {
  color: var(--olive);
  background-color: hsl(61 94% 25%);
  border-color: oklch(0.557 0.121 110.3);
}

Tailwind CSS v4

@theme {
  --color-olive: #787904;
  --color-olive-50: #f5f9d2;
  --color-olive-100: #e8edbf;
  --color-olive-200: #d5da9e;
  --color-olive-300: #b8be74;
  --color-olive-400: #a2a54a;
  --color-olive-500: #8b8c0c;
  --color-olive-600: #767711;
  --color-olive-700: #5e5f0f;
  --color-olive-800: #464506;
  --color-olive-900: #313005;
  --color-olive-950: #1d1c00;
}

SCSS

$olive: #787904;
$olive-rgb: 120, 121, 4;
$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);
}