Little Mermaid

CSS

:root {
  --little-mermaid: #2d454a;
  --little-mermaid-rgb: 45 69 74;
  --little-mermaid-oklch: oklch(0.373 0.031 212.1);
}

.element {
  color: var(--little-mermaid);
  background-color: hsl(190 24% 23%);
  border-color: oklch(0.373 0.031 212.1);
}

Tailwind CSS v4

@theme {
  --color-little-mermaid: #2d454a;
  --color-little-mermaid-50: #ecf8fb;
  --color-little-mermaid-100: #ddebee;
  --color-little-mermaid-200: #c6d8dc;
  --color-little-mermaid-300: #a6bcc1;
  --color-little-mermaid-400: #8aa4a9;
  --color-little-mermaid-500: #6f8c92;
  --color-little-mermaid-600: #5e767c;
  --color-little-mermaid-700: #4b5f63;
  --color-little-mermaid-800: #364548;
  --color-little-mermaid-900: #253032;
  --color-little-mermaid-950: #141c1e;
}

SCSS

$little-mermaid: #2d454a;
$little-mermaid-rgb: 45, 69, 74;
$little-mermaid-light: mix(#fff, $little-mermaid, 20%);
$little-mermaid-dark: mix(#000, $little-mermaid, 20%);

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