#9E9B8A

CSS

:root {
  --concrete-jungle: #9e9b8a;
  --concrete-jungle-rgb: 158 155 138;
  --concrete-jungle-oklch: oklch(0.687 0.024 98.8);
}

.element {
  color: var(--concrete-jungle);
  background-color: hsl(51 9% 58%);
  border-color: oklch(0.687 0.024 98.8);
}

Tailwind CSS v4

@theme {
  --color-concrete-jungle: #9e9b8a;
  --color-concrete-jungle-50: #f6f5ee;
  --color-concrete-jungle-100: #e9e8df;
  --color-concrete-jungle-200: #d6d5c9;
  --color-concrete-jungle-300: #bab8aa;
  --color-concrete-jungle-400: #a29f8f;
  --color-concrete-jungle-500: #8a8774;
  --color-concrete-jungle-600: #757263;
  --color-concrete-jungle-700: #5d5b4f;
  --color-concrete-jungle-800: #454339;
  --color-concrete-jungle-900: #2f2e27;
  --color-concrete-jungle-950: #1c1b15;
}

SCSS

$concrete-jungle: #9e9b8a;
$concrete-jungle-rgb: 158, 155, 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);
}