American River

CSS

:root {
  --american-river: #626e71;
  --american-river-rgb: 98 110 113;
  --american-river-oklch: oklch(0.529 0.015 214.4);
}

.element {
  color: var(--american-river);
  background-color: hsl(192 7% 41%);
  border-color: oklch(0.529 0.015 214.4);
}

Tailwind CSS v4

@theme {
  --color-american-river: #626e71;
  --color-american-river-50: #f0f6f8;
  --color-american-river-100: #e2e9eb;
  --color-american-river-200: #cdd6d8;
  --color-american-river-300: #afb9bc;
  --color-american-river-400: #95a1a4;
  --color-american-river-500: #7b898c;
  --color-american-river-600: #687477;
  --color-american-river-700: #535d5f;
  --color-american-river-800: #3d4445;
  --color-american-river-900: #2a2f30;
  --color-american-river-950: #171b1c;
}

SCSS

$american-river: #626e71;
$american-river-rgb: 98, 110, 113;
$american-river-light: mix(#fff, $american-river, 20%);
$american-river-dark: mix(#000, $american-river, 20%);

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