Theatre Blue

CSS

:root {
  --theatre-blue: #21467a;
  --theatre-blue-rgb: 33 70 122;
  --theatre-blue-oklch: oklch(0.395 0.098 257.4);
}

.element {
  color: var(--theatre-blue);
  background-color: hsl(215 57% 30%);
  border-color: oklch(0.395 0.098 257.4);
}

Tailwind CSS v4

@theme {
  --color-theatre-blue: #21467a;
  --color-theatre-blue-50: #e5f6ff;
  --color-theatre-blue-100: #d5e9ff;
  --color-theatre-blue-200: #bcd6ff;
  --color-theatre-blue-300: #9ab9ea;
  --color-theatre-blue-400: #79a0d8;
  --color-theatre-blue-500: #5b87c6;
  --color-theatre-blue-600: #4e73a7;
  --color-theatre-blue-700: #3e5c86;
  --color-theatre-blue-800: #2b4364;
  --color-theatre-blue-900: #1d2f46;
  --color-theatre-blue-950: #0d1b2e;
}

SCSS

$theatre-blue: #21467a;
$theatre-blue-rgb: 33, 70, 122;
$theatre-blue-light: mix(#fff, $theatre-blue, 20%);
$theatre-blue-dark: mix(#000, $theatre-blue, 20%);

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