#22D3EE

CSS

:root {
  --vaporwave-blue: #22d3ee;
  --vaporwave-blue-rgb: 34 211 238;
  --vaporwave-blue-oklch: oklch(0.797 0.134 211.5);
}

.element {
  color: var(--vaporwave-blue);
  background-color: hsl(188 86% 53%);
  border-color: oklch(0.797 0.134 211.5);
}

Tailwind CSS v4

@theme {
  --color-vaporwave-blue: #22d3ee;
  --color-vaporwave-blue-50: #caffff;
  --color-vaporwave-blue-100: #b4f4ff;
  --color-vaporwave-blue-200: #8ee4f7;
  --color-vaporwave-blue-300: #57c9e1;
  --color-vaporwave-blue-400: #00b3cc;
  --color-vaporwave-blue-500: #009bb9;
  --color-vaporwave-blue-600: #00849c;
  --color-vaporwave-blue-700: #00697d;
  --color-vaporwave-blue-800: #004e5b;
  --color-vaporwave-blue-900: #003640;
  --color-vaporwave-blue-950: #002129;
}

SCSS

$vaporwave-blue: #22d3ee;
$vaporwave-blue-rgb: 34, 211, 238;
$vaporwave-blue-light: mix(#fff, $vaporwave-blue, 20%);
$vaporwave-blue-dark: mix(#000, $vaporwave-blue, 20%);

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