#008ABE

CSS

:root {
  --mermaid-dreams: #008abe;
  --mermaid-dreams-rgb: 0 138 190;
  --mermaid-dreams-oklch: oklch(0.597 0.125 234.1);
}

.element {
  color: var(--mermaid-dreams);
  background-color: hsl(196 100% 37%);
  border-color: oklch(0.597 0.125 234.1);
}

Tailwind CSS v4

@theme {
  --color-mermaid-dreams: #008abe;
  --color-mermaid-dreams-50: #d4fcff;
  --color-mermaid-dreams-100: #c1efff;
  --color-mermaid-dreams-200: #a0ddff;
  --color-mermaid-dreams-300: #75c1ef;
  --color-mermaid-dreams-400: #45aadd;
  --color-mermaid-dreams-500: #0092cc;
  --color-mermaid-dreams-600: #007bac;
  --color-mermaid-dreams-700: #00638a;
  --color-mermaid-dreams-800: #004966;
  --color-mermaid-dreams-900: #003348;
  --color-mermaid-dreams-950: #001e2f;
}

SCSS

$mermaid-dreams: #008abe;
$mermaid-dreams-rgb: 0, 138, 190;
$mermaid-dreams-light: mix(#fff, $mermaid-dreams, 20%);
$mermaid-dreams-dark: mix(#000, $mermaid-dreams, 20%);

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