Swallow Blue

CSS

:root {
  --swallow-blue: #154962;
  --swallow-blue-rgb: 21 73 98;
  --swallow-blue-oklch: oklch(0.384 0.068 233.7);
}

.element {
  color: var(--swallow-blue);
  background-color: hsl(199 65% 23%);
  border-color: oklch(0.384 0.068 233.7);
}

Tailwind CSS v4

@theme {
  --color-swallow-blue: #154962;
  --color-swallow-blue-50: #e3f9ff;
  --color-swallow-blue-100: #d3ecfc;
  --color-swallow-blue-200: #b9daee;
  --color-swallow-blue-300: #96bed6;
  --color-swallow-blue-400: #76a6c1;
  --color-swallow-blue-500: #568ead;
  --color-swallow-blue-600: #497892;
  --color-swallow-blue-700: #3a6075;
  --color-swallow-blue-800: #294756;
  --color-swallow-blue-900: #1b313c;
  --color-swallow-blue-950: #0b1d26;
}

SCSS

$swallow-blue: #154962;
$swallow-blue-rgb: 21, 73, 98;
$swallow-blue-light: mix(#fff, $swallow-blue, 20%);
$swallow-blue-dark: mix(#000, $swallow-blue, 20%);

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