#3BA1EC

CSS

:root {
  --fresh-blue-of-bel-air: #3ba1ec;
  --fresh-blue-of-bel-air-rgb: 59 161 236;
  --fresh-blue-of-bel-air-oklch: oklch(0.684 0.144 244.8);
}

.element {
  color: var(--fresh-blue-of-bel-air);
  background-color: hsl(205 82% 58%);
  border-color: oklch(0.684 0.144 244.8);
}

Tailwind CSS v4

@theme {
  --color-fresh-blue-of-bel-air: #3ba1ec;
  --color-fresh-blue-of-bel-air-50: #d5faff;
  --color-fresh-blue-of-bel-air-100: #c2edff;
  --color-fresh-blue-of-bel-air-200: #a2dbff;
  --color-fresh-blue-of-bel-air-300: #77befd;
  --color-fresh-blue-of-bel-air-400: #48a6ed;
  --color-fresh-blue-of-bel-air-500: #008dde;
  --color-fresh-blue-of-bel-air-600: #0277bb;
  --color-fresh-blue-of-bel-air-700: #065f96;
  --color-fresh-blue-of-bel-air-800: #004670;
  --color-fresh-blue-of-bel-air-900: #00314f;
  --color-fresh-blue-of-bel-air-950: #001d34;
}

SCSS

$fresh-blue-of-bel-air: #3ba1ec;
$fresh-blue-of-bel-air-rgb: 59, 161, 236;
$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);
}