#56A7DD

CSS

:root {
  --high-blue: #56a7dd;
  --high-blue-rgb: 86 167 221;
  --high-blue-oklch: oklch(0.7 0.112 240.2);
}

.element {
  color: var(--high-blue);
  background-color: hsl(204 67% 60%);
  border-color: oklch(0.7 0.112 240.2);
}

Tailwind CSS v4

@theme {
  --color-high-blue: #56a7dd;
  --color-high-blue-50: #dafaff;
  --color-high-blue-100: #c8edff;
  --color-high-blue-200: #aadbff;
  --color-high-blue-300: #83bfec;
  --color-high-blue-400: #5ba7da;
  --color-high-blue-500: #2e8fc9;
  --color-high-blue-600: #2a79a9;
  --color-high-blue-700: #216188;
  --color-high-blue-800: #134765;
  --color-high-blue-900: #0c3147;
  --color-high-blue-950: #011d2e;
}

SCSS

$high-blue: #56a7dd;
$high-blue-rgb: 86, 167, 221;
$high-blue-light: mix(#fff, $high-blue, 20%);
$high-blue-dark: mix(#000, $high-blue, 20%);

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