#797651

CSS

:root {
  --greek-oregano: #797651;
  --greek-oregano-rgb: 121 118 81;
  --greek-oregano-oklch: oklch(0.559 0.054 104.1);
}

.element {
  color: var(--greek-oregano);
  background-color: hsl(56 20% 40%);
  border-color: oklch(0.559 0.054 104.1);
}

Tailwind CSS v4

@theme {
  --color-greek-oregano: #797651;
  --color-greek-oregano-50: #f7f6e5;
  --color-greek-oregano-100: #eae9d5;
  --color-greek-oregano-200: #d7d6bc;
  --color-greek-oregano-300: #baba9a;
  --color-greek-oregano-400: #a3a07c;
  --color-greek-oregano-500: #8c885f;
  --color-greek-oregano-600: #767350;
  --color-greek-oregano-700: #5f5c40;
  --color-greek-oregano-800: #46432e;
  --color-greek-oregano-900: #302e1f;
  --color-greek-oregano-950: #1d1b0f;
}

SCSS

$greek-oregano: #797651;
$greek-oregano-rgb: 121, 118, 81;
$greek-oregano-light: mix(#fff, $greek-oregano, 20%);
$greek-oregano-dark: mix(#000, $greek-oregano, 20%);

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