#3EA0F3

CSS

:root {
  --fresh-blue-of-bel-air: #3ea0f3;
  --fresh-blue-of-bel-air-rgb: 62 160 243;
  --fresh-blue-of-bel-air-oklch: oklch(0.687 0.152 247.9);
}

.element {
  color: var(--fresh-blue-of-bel-air);
  background-color: hsl(208 88% 60%);
  border-color: oklch(0.687 0.152 247.9);
}

Tailwind CSS v4

@theme {
  --color-fresh-blue-of-bel-air: #3ea0f3;
  --color-fresh-blue-of-bel-air-50: #d5f9ff;
  --color-fresh-blue-of-bel-air-100: #c2edff;
  --color-fresh-blue-of-bel-air-200: #a2daff;
  --color-fresh-blue-of-bel-air-300: #78bdff;
  --color-fresh-blue-of-bel-air-400: #4aa4f3;
  --color-fresh-blue-of-bel-air-500: #008ae5;
  --color-fresh-blue-of-bel-air-600: #0a75c1;
  --color-fresh-blue-of-bel-air-700: #0a5e9b;
  --color-fresh-blue-of-bel-air-800: #004573;
  --color-fresh-blue-of-bel-air-900: #013051;
  --color-fresh-blue-of-bel-air-950: #001c36;
}

SCSS

$fresh-blue-of-bel-air: #3ea0f3;
$fresh-blue-of-bel-air-rgb: 62, 160, 243;
$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);
}