Blue Fescue

CSS

:root {
  --blue-fescue: #adb6ac;
  --blue-fescue-rgb: 173 182 172;
  --blue-fescue-oklch: oklch(0.766 0.017 142.5);
}

.element {
  color: var(--blue-fescue);
  background-color: hsl(114 6% 69%);
  border-color: oklch(0.766 0.017 142.5);
}

Tailwind CSS v4

@theme {
  --color-blue-fescue: #adb6ac;
  --color-blue-fescue-50: #f2f6f2;
  --color-blue-fescue-100: #e4e9e4;
  --color-blue-fescue-200: #d0d6d0;
  --color-blue-fescue-300: #b2bab2;
  --color-blue-fescue-400: #99a198;
  --color-blue-fescue-500: #80897f;
  --color-blue-fescue-600: #6c746b;
  --color-blue-fescue-700: #575d56;
  --color-blue-fescue-800: #3f443e;
  --color-blue-fescue-900: #2c2f2b;
  --color-blue-fescue-950: #191b18;
}

SCSS

$blue-fescue: #adb6ac;
$blue-fescue-rgb: 173, 182, 172;
$blue-fescue-light: mix(#fff, $blue-fescue, 20%);
$blue-fescue-dark: mix(#000, $blue-fescue, 20%);

.element {
  color: $blue-fescue;
  box-shadow: 0 0 0 2px rgba($blue-fescue, 0.35);
}