#0E77AC

CSS

:root {
  --brilliant-blue: #0e77ac;
  --brilliant-blue-rgb: 14 119 172;
  --brilliant-blue-oklch: oklch(0.542 0.118 239.1);
}

.element {
  color: var(--brilliant-blue);
  background-color: hsl(200 85% 36%);
  border-color: oklch(0.542 0.118 239.1);
}

Tailwind CSS v4

@theme {
  --color-brilliant-blue: #0e77ac;
  --color-brilliant-blue-50: #d8faff;
  --color-brilliant-blue-100: #c6eeff;
  --color-brilliant-blue-200: #a7dbff;
  --color-brilliant-blue-300: #7fbfef;
  --color-brilliant-blue-400: #54a8dd;
  --color-brilliant-blue-500: #208fcb;
  --color-brilliant-blue-600: #1f79ac;
  --color-brilliant-blue-700: #19618a;
  --color-brilliant-blue-800: #0c4866;
  --color-brilliant-blue-900: #083248;
  --color-brilliant-blue-950: #001d2f;
}

SCSS

$brilliant-blue: #0e77ac;
$brilliant-blue-rgb: 14, 119, 172;
$brilliant-blue-light: mix(#fff, $brilliant-blue, 20%);
$brilliant-blue-dark: mix(#000, $brilliant-blue, 20%);

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