Saxon Blue

CSS

:root {
  --saxon-blue: #435965;
  --saxon-blue-rgb: 67 89 101;
  --saxon-blue-oklch: oklch(0.451 0.033 232.3);
}

.element {
  color: var(--saxon-blue);
  background-color: hsl(201 20% 33%);
  border-color: oklch(0.451 0.033 232.3);
}

Tailwind CSS v4

@theme {
  --color-saxon-blue: #435965;
  --color-saxon-blue-50: #ecf7fd;
  --color-saxon-blue-100: #deeaf1;
  --color-saxon-blue-200: #c7d7e1;
  --color-saxon-blue-300: #a8bbc6;
  --color-saxon-blue-400: #8ca2af;
  --color-saxon-blue-500: #718a99;
  --color-saxon-blue-600: #607581;
  --color-saxon-blue-700: #4c5e67;
  --color-saxon-blue-800: #37454c;
  --color-saxon-blue-900: #253035;
  --color-saxon-blue-950: #141c20;
}

SCSS

$saxon-blue: #435965;
$saxon-blue-rgb: 67, 89, 101;
$saxon-blue-light: mix(#fff, $saxon-blue, 20%);
$saxon-blue-dark: mix(#000, $saxon-blue, 20%);

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