#9B9C8E

CSS

:root {
  --concrete-jungle: #9b9c8e;
  --concrete-jungle-rgb: 155 156 142;
  --concrete-jungle-oklch: oklch(0.688 0.02 110.2);
}

.element {
  color: var(--concrete-jungle);
  background-color: hsl(64 7% 58%);
  border-color: oklch(0.688 0.02 110.2);
}

Tailwind CSS v4

@theme {
  --color-concrete-jungle: #9b9c8e;
  --color-concrete-jungle-50: #f5f6ef;
  --color-concrete-jungle-100: #e8e9e1;
  --color-concrete-jungle-200: #d4d5cc;
  --color-concrete-jungle-300: #b7b9ad;
  --color-concrete-jungle-400: #9fa092;
  --color-concrete-jungle-500: #878879;
  --color-concrete-jungle-600: #727366;
  --color-concrete-jungle-700: #5b5c52;
  --color-concrete-jungle-800: #43433b;
  --color-concrete-jungle-900: #2e2e29;
  --color-concrete-jungle-950: #1b1b16;
}

SCSS

$concrete-jungle: #9b9c8e;
$concrete-jungle-rgb: 155, 156, 142;
$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);
}