#6D6B6F

CSS

:root {
  --paris-paving: #6d6b6f;
  --paris-paving-rgb: 109 107 111;
  --paris-paving-oklch: oklch(0.531 0.007 308.3);
}

.element {
  color: var(--paris-paving);
  background-color: hsl(270 2% 43%);
  border-color: oklch(0.531 0.007 308.3);
}

Tailwind CSS v4

@theme {
  --color-paris-paving: #6d6b6f;
  --color-paris-paving-50: #f6f4f6;
  --color-paris-paving-100: #e8e7e9;
  --color-paris-paving-200: #d5d3d6;
  --color-paris-paving-300: #b8b6ba;
  --color-paris-paving-400: #9f9da1;
  --color-paris-paving-500: #87858a;
  --color-paris-paving-600: #727174;
  --color-paris-paving-700: #5c5a5d;
  --color-paris-paving-800: #434244;
  --color-paris-paving-900: #2e2d2f;
  --color-paris-paving-950: #1b1a1c;
}

SCSS

$paris-paving: #6d6b6f;
$paris-paving-rgb: 109, 107, 111;
$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);
}