#9C9B8C

CSS

:root {
  --concrete-jungle: #9c9b8c;
  --concrete-jungle-rgb: 156 155 140;
  --concrete-jungle-oklch: oklch(0.686 0.021 103.8);
}

.element {
  color: var(--concrete-jungle);
  background-color: hsl(56 7% 58%);
  border-color: oklch(0.686 0.021 103.8);
}

Tailwind CSS v4

@theme {
  --color-concrete-jungle: #9c9b8c;
  --color-concrete-jungle-50: #f6f6ef;
  --color-concrete-jungle-100: #e9e8e0;
  --color-concrete-jungle-200: #d5d5cb;
  --color-concrete-jungle-300: #b8b8ac;
  --color-concrete-jungle-400: #a09f91;
  --color-concrete-jungle-500: #888777;
  --color-concrete-jungle-600: #737265;
  --color-concrete-jungle-700: #5c5b50;
  --color-concrete-jungle-800: #44433a;
  --color-concrete-jungle-900: #2f2e28;
  --color-concrete-jungle-950: #1b1b16;
}

SCSS

$concrete-jungle: #9c9b8c;
$concrete-jungle-rgb: 156, 155, 140;
$concrete-jungle-light: mix(#fff, $concrete-jungle, 20%);
$concrete-jungle-dark: mix(#000, $concrete-jungle, 20%);

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