Blue Tang

CSS

:root {
  --blue-tang: #2a4b6e;
  --blue-tang-rgb: 42 75 110;
  --blue-tang-oklch: oklch(0.405 0.071 251.2);
}

.element {
  color: var(--blue-tang);
  background-color: hsl(211 45% 30%);
  border-color: oklch(0.405 0.071 251.2);
}

Tailwind CSS v4

@theme {
  --color-blue-tang: #2a4b6e;
  --color-blue-tang-50: #e7f7ff;
  --color-blue-tang-100: #d8eaff;
  --color-blue-tang-200: #c0d7f3;
  --color-blue-tang-300: #9ebadc;
  --color-blue-tang-400: #80a2c8;
  --color-blue-tang-500: #638ab4;
  --color-blue-tang-600: #547498;
  --color-blue-tang-700: #435d7a;
  --color-blue-tang-800: #2f445a;
  --color-blue-tang-900: #202f3f;
  --color-blue-tang-950: #0f1c28;
}

SCSS

$blue-tang: #2a4b6e;
$blue-tang-rgb: 42, 75, 110;
$blue-tang-light: mix(#fff, $blue-tang, 20%);
$blue-tang-dark: mix(#000, $blue-tang, 20%);

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