#786A5A

CSS

:root {
  --granite: #786a5a;
  --granite-rgb: 120 106 90;
  --granite-oklch: oklch(0.533 0.03 70.8);
}

.element {
  color: var(--granite);
  background-color: hsl(32 14% 41%);
  border-color: oklch(0.533 0.03 70.8);
}

Tailwind CSS v4

@theme {
  --color-granite: #786a5a;
  --color-granite-50: #fbf4ec;
  --color-granite-100: #eee7dd;
  --color-granite-200: #dcd3c7;
  --color-granite-300: #c1b5a7;
  --color-granite-400: #aa9c8c;
  --color-granite-500: #938371;
  --color-granite-600: #7c6f60;
  --color-granite-700: #64594c;
  --color-granite-800: #494137;
  --color-granite-900: #332d26;
  --color-granite-950: #1f1a14;
}

SCSS

$granite: #786a5a;
$granite-rgb: 120, 106, 90;
$granite-light: mix(#fff, $granite, 20%);
$granite-dark: mix(#000, $granite, 20%);

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