#008BC9

CSS

:root {
  --way-beyond-the-blue: #008bc9;
  --way-beyond-the-blue-rgb: 0 139 201;
  --way-beyond-the-blue-oklch: oklch(0.605 0.136 238.6);
}

.element {
  color: var(--way-beyond-the-blue);
  background-color: hsl(199 100% 39%);
  border-color: oklch(0.605 0.136 238.6);
}

Tailwind CSS v4

@theme {
  --color-way-beyond-the-blue: #008bc9;
  --color-way-beyond-the-blue-50: #d3fbff;
  --color-way-beyond-the-blue-100: #c0efff;
  --color-way-beyond-the-blue-200: #9fdcff;
  --color-way-beyond-the-blue-300: #74c0f6;
  --color-way-beyond-the-blue-400: #42a9e5;
  --color-way-beyond-the-blue-500: #0090d5;
  --color-way-beyond-the-blue-600: #007ab4;
  --color-way-beyond-the-blue-700: #006290;
  --color-way-beyond-the-blue-800: #00486b;
  --color-way-beyond-the-blue-900: #00324b;
  --color-way-beyond-the-blue-950: #001e32;
}

SCSS

$way-beyond-the-blue: #008bc9;
$way-beyond-the-blue-rgb: 0, 139, 201;
$way-beyond-the-blue-light: mix(#fff, $way-beyond-the-blue, 20%);
$way-beyond-the-blue-dark: mix(#000, $way-beyond-the-blue, 20%);

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