#9B9C8C

CSS

:root {
  --concrete-jungle: #9b9c8c;
  --concrete-jungle-rgb: 155 156 140;
  --concrete-jungle-oklch: oklch(0.687 0.023 109.9);
}

.element {
  color: var(--concrete-jungle);
  background-color: hsl(64 7% 58%);
  border-color: oklch(0.687 0.023 109.9);
}

Tailwind CSS v4

@theme {
  --color-concrete-jungle: #9b9c8c;
  --color-concrete-jungle-50: #f5f6ef;
  --color-concrete-jungle-100: #e8e9e0;
  --color-concrete-jungle-200: #d4d5ca;
  --color-concrete-jungle-300: #b7b9ac;
  --color-concrete-jungle-400: #9fa091;
  --color-concrete-jungle-500: #878877;
  --color-concrete-jungle-600: #727364;
  --color-concrete-jungle-700: #5b5c50;
  --color-concrete-jungle-800: #43433a;
  --color-concrete-jungle-900: #2e2e28;
  --color-concrete-jungle-950: #1b1b16;
}

SCSS

$concrete-jungle: #9b9c8c;
$concrete-jungle-rgb: 155, 156, 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);
}