#43A0F1

CSS

:root {
  --fresh-blue-of-bel-air: #43a0f1;
  --fresh-blue-of-bel-air-rgb: 67 160 241;
  --fresh-blue-of-bel-air-oklch: oklch(0.687 0.148 248.2);
}

.element {
  color: var(--fresh-blue-of-bel-air);
  background-color: hsl(208 86% 60%);
  border-color: oklch(0.687 0.148 248.2);
}

Tailwind CSS v4

@theme {
  --color-fresh-blue-of-bel-air: #43a0f1;
  --color-fresh-blue-of-bel-air-50: #d6f9ff;
  --color-fresh-blue-of-bel-air-100: #c3ecff;
  --color-fresh-blue-of-bel-air-200: #a4d9ff;
  --color-fresh-blue-of-bel-air-300: #7bbdff;
  --color-fresh-blue-of-bel-air-400: #4ea4f1;
  --color-fresh-blue-of-bel-air-500: #118ae2;
  --color-fresh-blue-of-bel-air-600: #1575bf;
  --color-fresh-blue-of-bel-air-700: #125e99;
  --color-fresh-blue-of-bel-air-800: #034572;
  --color-fresh-blue-of-bel-air-900: #033050;
  --color-fresh-blue-of-bel-air-950: #001c36;
}

SCSS

$fresh-blue-of-bel-air: #43a0f1;
$fresh-blue-of-bel-air-rgb: 67, 160, 241;
$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);
}