Wild River

CSS

:root {
  --wild-river: #447382;
  --wild-river-rgb: 68 115 130;
  --wild-river-oklch: oklch(0.528 0.056 220.4);
}

.element {
  color: var(--wild-river);
  background-color: hsl(195 31% 39%);
  border-color: oklch(0.528 0.056 220.4);
}

Tailwind CSS v4

@theme {
  --color-wild-river: #447382;
  --color-wild-river-50: #e5f9ff;
  --color-wild-river-100: #d5edf6;
  --color-wild-river-200: #bbdae6;
  --color-wild-river-300: #99becc;
  --color-wild-river-400: #79a7b6;
  --color-wild-river-500: #5a8fa0;
  --color-wild-river-600: #4d7987;
  --color-wild-river-700: #3d616d;
  --color-wild-river-800: #2b4750;
  --color-wild-river-900: #1d3137;
  --color-wild-river-950: #0d1d22;
}

SCSS

$wild-river: #447382;
$wild-river-rgb: 68, 115, 130;
$wild-river-light: mix(#fff, $wild-river, 20%);
$wild-river-dark: mix(#000, $wild-river, 20%);

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