#44A1E9

CSS

:root {
  --fresh-blue-of-bel-air: #44a1e9;
  --fresh-blue-of-bel-air-rgb: 68 161 233;
  --fresh-blue-of-bel-air-oklch: oklch(0.686 0.138 245.3);
}

.element {
  color: var(--fresh-blue-of-bel-air);
  background-color: hsl(206 79% 59%);
  border-color: oklch(0.686 0.138 245.3);
}

Tailwind CSS v4

@theme {
  --color-fresh-blue-of-bel-air: #44a1e9;
  --color-fresh-blue-of-bel-air-50: #d7faff;
  --color-fresh-blue-of-bel-air-100: #c4edff;
  --color-fresh-blue-of-bel-air-200: #a5daff;
  --color-fresh-blue-of-bel-air-300: #7cbefa;
  --color-fresh-blue-of-bel-air-400: #4fa6ea;
  --color-fresh-blue-of-bel-air-500: #148cda;
  --color-fresh-blue-of-bel-air-600: #1777b8;
  --color-fresh-blue-of-bel-air-700: #135f94;
  --color-fresh-blue-of-bel-air-800: #05466e;
  --color-fresh-blue-of-bel-air-900: #04314d;
  --color-fresh-blue-of-bel-air-950: #001d33;
}

SCSS

$fresh-blue-of-bel-air: #44a1e9;
$fresh-blue-of-bel-air-rgb: 68, 161, 233;
$fresh-blue-of-bel-air-light: mix(#fff, $fresh-blue-of-bel-air, 20%);
$fresh-blue-of-bel-air-dark: mix(#000, $fresh-blue-of-bel-air, 20%);

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