#37A2EB

CSS

:root {
  --fresh-blue-of-bel-air: #37a2eb;
  --fresh-blue-of-bel-air-rgb: 55 162 235;
  --fresh-blue-of-bel-air-oklch: oklch(0.685 0.144 243.3);
}

.element {
  color: var(--fresh-blue-of-bel-air);
  background-color: hsl(204 82% 57%);
  border-color: oklch(0.685 0.144 243.3);
}

Tailwind CSS v4

@theme {
  --color-fresh-blue-of-bel-air: #37a2eb;
  --color-fresh-blue-of-bel-air-50: #d4faff;
  --color-fresh-blue-of-bel-air-100: #c1eeff;
  --color-fresh-blue-of-bel-air-200: #a0dbff;
  --color-fresh-blue-of-bel-air-300: #75bffc;
  --color-fresh-blue-of-bel-air-400: #45a7ec;
  --color-fresh-blue-of-bel-air-500: #008ddd;
  --color-fresh-blue-of-bel-air-600: #0078ba;
  --color-fresh-blue-of-bel-air-700: #006096;
  --color-fresh-blue-of-bel-air-800: #00476f;
  --color-fresh-blue-of-bel-air-900: #00314e;
  --color-fresh-blue-of-bel-air-950: #001d34;
}

SCSS

$fresh-blue-of-bel-air: #37a2eb;
$fresh-blue-of-bel-air-rgb: 55, 162, 235;
$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);
}