Charter Blue

CSS

:root {
  --charter-blue: #546e91;
  --charter-blue-rgb: 84 110 145;
  --charter-blue-oklch: oklch(0.532 0.063 256);
}

.element {
  color: var(--charter-blue);
  background-color: hsl(214 27% 45%);
  border-color: oklch(0.532 0.063 256);
}

Tailwind CSS v4

@theme {
  --color-charter-blue: #546e91;
  --color-charter-blue-50: #eaf6ff;
  --color-charter-blue-100: #dbe9fe;
  --color-charter-blue-200: #c4d6f0;
  --color-charter-blue-300: #a4b9d8;
  --color-charter-blue-400: #86a0c4;
  --color-charter-blue-500: #6a88b0;
  --color-charter-blue-600: #5a7395;
  --color-charter-blue-700: #485c77;
  --color-charter-blue-800: #334458;
  --color-charter-blue-900: #232f3e;
  --color-charter-blue-950: #121b27;
}

SCSS

$charter-blue: #546e91;
$charter-blue-rgb: 84, 110, 145;
$charter-blue-light: mix(#fff, $charter-blue, 20%);
$charter-blue-dark: mix(#000, $charter-blue, 20%);

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