Mystic River

CSS

:root {
  --mystic-river: #b7cae0;
  --mystic-river-rgb: 183 202 224;
  --mystic-river-oklch: oklch(0.832 0.037 252.1);
}

.element {
  color: var(--mystic-river);
  background-color: hsl(212 40% 80%);
  border-color: oklch(0.832 0.037 252.1);
}

Tailwind CSS v4

@theme {
  --color-mystic-river: #b7cae0;
  --color-mystic-river-50: #eef6ff;
  --color-mystic-river-100: #e0e9f4;
  --color-mystic-river-200: #cad5e4;
  --color-mystic-river-300: #abb9cb;
  --color-mystic-river-400: #8fa0b4;
  --color-mystic-river-500: #75889f;
  --color-mystic-river-600: #637386;
  --color-mystic-river-700: #4f5c6b;
  --color-mystic-river-800: #39444f;
  --color-mystic-river-900: #272f37;
  --color-mystic-river-950: #151b22;
}

SCSS

$mystic-river: #b7cae0;
$mystic-river-rgb: 183, 202, 224;
$mystic-river-light: mix(#fff, $mystic-river, 20%);
$mystic-river-dark: mix(#000, $mystic-river, 20%);

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