Major Blue

CSS

:root {
  --major-blue: #289ec4;
  --major-blue-rgb: 40 158 196;
  --major-blue-oklch: oklch(0.653 0.113 225);
}

.element {
  color: var(--major-blue);
  background-color: hsl(195 66% 46%);
  border-color: oklch(0.653 0.113 225);
}

Tailwind CSS v4

@theme {
  --color-major-blue: #289ec4;
  --color-major-blue-50: #d4fdff;
  --color-major-blue-100: #c1f0ff;
  --color-major-blue-200: #a0dffa;
  --color-major-blue-300: #75c3e5;
  --color-major-blue-400: #45acd1;
  --color-major-blue-500: #0095be;
  --color-major-blue-600: #007ea1;
  --color-major-blue-700: #006581;
  --color-major-blue-800: #004a5f;
  --color-major-blue-900: #003442;
  --color-major-blue-950: #001f2b;
}

SCSS

$major-blue: #289ec4;
$major-blue-rgb: 40, 158, 196;
$major-blue-light: mix(#fff, $major-blue, 20%);
$major-blue-dark: mix(#000, $major-blue, 20%);

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