#9C9C8A

CSS

:root {
  --concrete-jungle: #9c9c8a;
  --concrete-jungle-rgb: 156 156 138;
  --concrete-jungle-oklch: oklch(0.688 0.026 107.1);
}

.element {
  color: var(--concrete-jungle);
  background-color: hsl(60 8% 58%);
  border-color: oklch(0.688 0.026 107.1);
}

Tailwind CSS v4

@theme {
  --color-concrete-jungle: #9c9c8a;
  --color-concrete-jungle-50: #f5f6ee;
  --color-concrete-jungle-100: #e8e9df;
  --color-concrete-jungle-200: #d5d5c9;
  --color-concrete-jungle-300: #b8b9aa;
  --color-concrete-jungle-400: #a0a08f;
  --color-concrete-jungle-500: #888874;
  --color-concrete-jungle-600: #737363;
  --color-concrete-jungle-700: #5c5c4f;
  --color-concrete-jungle-800: #434339;
  --color-concrete-jungle-900: #2f2e27;
  --color-concrete-jungle-950: #1b1b15;
}

SCSS

$concrete-jungle: #9c9c8a;
$concrete-jungle-rgb: 156, 156, 138;
$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);
}