Half Sea Fog

CSS

:root {
  --half-sea-fog: #a9b8bb;
  --half-sea-fog-rgb: 169 184 187;
  --half-sea-fog-oklch: oklch(0.772 0.017 211);
}

.element {
  color: var(--half-sea-fog);
  background-color: hsl(190 12% 70%);
  border-color: oklch(0.772 0.017 211);
}

Tailwind CSS v4

@theme {
  --color-half-sea-fog: #a9b8bb;
  --color-half-sea-fog-50: #f0f6f8;
  --color-half-sea-fog-100: #e2e9eb;
  --color-half-sea-fog-200: #ccd6d9;
  --color-half-sea-fog-300: #aebabd;
  --color-half-sea-fog-400: #93a1a4;
  --color-half-sea-fog-500: #7a898d;
  --color-half-sea-fog-600: #677477;
  --color-half-sea-fog-700: #525d5f;
  --color-half-sea-fog-800: #3c4446;
  --color-half-sea-fog-900: #292f30;
  --color-half-sea-fog-950: #171c1c;
}

SCSS

$half-sea-fog: #a9b8bb;
$half-sea-fog-rgb: 169, 184, 187;
$half-sea-fog-light: mix(#fff, $half-sea-fog, 20%);
$half-sea-fog-dark: mix(#000, $half-sea-fog, 20%);

.element {
  color: $half-sea-fog;
  box-shadow: 0 0 0 2px rgba($half-sea-fog, 0.35);
}