Dark Cobalt Blue

CSS

:root {
  --dark-cobalt-blue: #33578a;
  --dark-cobalt-blue-rgb: 51 87 138;
  --dark-cobalt-blue-oklch: oklch(0.455 0.094 257.3);
}

.element {
  color: var(--dark-cobalt-blue);
  background-color: hsl(215 46% 37%);
  border-color: oklch(0.455 0.094 257.3);
}

Tailwind CSS v4

@theme {
  --color-dark-cobalt-blue: #33578a;
  --color-dark-cobalt-blue-50: #e6f6ff;
  --color-dark-cobalt-blue-100: #d6e9ff;
  --color-dark-cobalt-blue-200: #bdd6fd;
  --color-dark-cobalt-blue-300: #9bb9e8;
  --color-dark-cobalt-blue-400: #7ba0d6;
  --color-dark-cobalt-blue-500: #5d87c4;
  --color-dark-cobalt-blue-600: #4f73a5;
  --color-dark-cobalt-blue-700: #3f5c85;
  --color-dark-cobalt-blue-800: #2c4462;
  --color-dark-cobalt-blue-900: #1d2f45;
  --color-dark-cobalt-blue-950: #0d1b2d;
}

SCSS

$dark-cobalt-blue: #33578a;
$dark-cobalt-blue-rgb: 51, 87, 138;
$dark-cobalt-blue-light: mix(#fff, $dark-cobalt-blue, 20%);
$dark-cobalt-blue-dark: mix(#000, $dark-cobalt-blue, 20%);

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