#727272

CSS

:root {
  --paris-paving: #727272;
  --paris-paving-rgb: 114 114 114;
  --paris-paving-oklch: oklch(0.552 0 0);
}

.element {
  color: var(--paris-paving);
  background-color: hsl(0 0% 45%);
  border-color: oklch(0.552 0 0);
}

Tailwind CSS v4

@theme {
  --color-paris-paving: #727272;
  --color-paris-paving-50: #f5f5f5;
  --color-paris-paving-100: #e8e8e8;
  --color-paris-paving-200: #d4d4d4;
  --color-paris-paving-300: #b7b7b7;
  --color-paris-paving-400: #9e9e9e;
  --color-paris-paving-500: #868686;
  --color-paris-paving-600: #717171;
  --color-paris-paving-700: #5b5b5b;
  --color-paris-paving-800: #424242;
  --color-paris-paving-900: #2e2e2e;
  --color-paris-paving-950: #1b1b1b;
}

SCSS

$paris-paving: #727272;
$paris-paving-rgb: 114, 114, 114;
$paris-paving-light: mix(#fff, $paris-paving, 20%);
$paris-paving-dark: mix(#000, $paris-paving, 20%);

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