#9D9B8F

CSS

:root {
  --concrete-jungle: #9d9b8f;
  --concrete-jungle-rgb: 157 155 143;
  --concrete-jungle-oklch: oklch(0.688 0.017 99.1);
}

.element {
  color: var(--concrete-jungle);
  background-color: hsl(51 7% 59%);
  border-color: oklch(0.688 0.017 99.1);
}

Tailwind CSS v4

@theme {
  --color-concrete-jungle: #9d9b8f;
  --color-concrete-jungle-50: #f6f5f0;
  --color-concrete-jungle-100: #e9e8e2;
  --color-concrete-jungle-200: #d6d5cc;
  --color-concrete-jungle-300: #b9b8ae;
  --color-concrete-jungle-400: #a19f93;
  --color-concrete-jungle-500: #89877a;
  --color-concrete-jungle-600: #747267;
  --color-concrete-jungle-700: #5d5b52;
  --color-concrete-jungle-800: #44423c;
  --color-concrete-jungle-900: #2f2e29;
  --color-concrete-jungle-950: #1b1b17;
}

SCSS

$concrete-jungle: #9d9b8f;
$concrete-jungle-rgb: 157, 155, 143;
$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);
}