Honourable Blue

CSS

:root {
  --honourable-blue: #164576;
  --honourable-blue-rgb: 22 69 118;
  --honourable-blue-oklch: oklch(0.386 0.097 252.6);
}

.element {
  color: var(--honourable-blue);
  background-color: hsl(211 69% 27%);
  border-color: oklch(0.386 0.097 252.6);
}

Tailwind CSS v4

@theme {
  --color-honourable-blue: #164576;
  --color-honourable-blue-50: #e3f7ff;
  --color-honourable-blue-100: #d2eaff;
  --color-honourable-blue-200: #b9d7fe;
  --color-honourable-blue-300: #96bae9;
  --color-honourable-blue-400: #74a2d7;
  --color-honourable-blue-500: #5589c5;
  --color-honourable-blue-600: #4874a6;
  --color-honourable-blue-700: #395d85;
  --color-honourable-blue-800: #274463;
  --color-honourable-blue-900: #1a2f45;
  --color-honourable-blue-950: #0a1c2d;
}

SCSS

$honourable-blue: #164576;
$honourable-blue-rgb: 22, 69, 118;
$honourable-blue-light: mix(#fff, $honourable-blue, 20%);
$honourable-blue-dark: mix(#000, $honourable-blue, 20%);

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