Hadfield Blue

CSS

:root {
  --hadfield-blue: #1177ff;
  --hadfield-blue-rgb: 17 119 255;
  --hadfield-blue-oklch: oklch(0.598 0.22 258.7);
}

.element {
  color: var(--hadfield-blue);
  background-color: hsl(214 100% 53%);
  border-color: oklch(0.598 0.22 258.7);
}

Tailwind CSS v4

@theme {
  --color-hadfield-blue: #1177ff;
  --color-hadfield-blue-50: #d2f7ff;
  --color-hadfield-blue-100: #bee9ff;
  --color-hadfield-blue-200: #9ed4ff;
  --color-hadfield-blue-300: #74b5ff;
  --color-hadfield-blue-400: #429aff;
  --color-hadfield-blue-500: #007bff;
  --color-hadfield-blue-600: #0369e8;
  --color-hadfield-blue-700: #0554bb;
  --color-hadfield-blue-800: #003e8c;
  --color-hadfield-blue-900: #002b63;
  --color-hadfield-blue-950: #001744;
}

SCSS

$hadfield-blue: #1177ff;
$hadfield-blue-rgb: 17, 119, 255;
$hadfield-blue-light: mix(#fff, $hadfield-blue, 20%);
$hadfield-blue-dark: mix(#000, $hadfield-blue, 20%);

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