Blue Earth

CSS

:root {
  --blue-earth: #375673;
  --blue-earth-rgb: 55 86 115;
  --blue-earth-oklch: oklch(0.442 0.06 247.7);
}

.element {
  color: var(--blue-earth);
  background-color: hsl(209 35% 33%);
  border-color: oklch(0.442 0.06 247.7);
}

Tailwind CSS v4

@theme {
  --color-blue-earth: #375673;
  --color-blue-earth-50: #e9f7ff;
  --color-blue-earth-100: #d9eafc;
  --color-blue-earth-200: #c1d7ee;
  --color-blue-earth-300: #a0bad6;
  --color-blue-earth-400: #82a2c1;
  --color-blue-earth-500: #668aad;
  --color-blue-earth-600: #577592;
  --color-blue-earth-700: #455e75;
  --color-blue-earth-800: #314556;
  --color-blue-earth-900: #212f3c;
  --color-blue-earth-950: #101c26;
}

SCSS

$blue-earth: #375673;
$blue-earth-rgb: 55, 86, 115;
$blue-earth-light: mix(#fff, $blue-earth, 20%);
$blue-earth-dark: mix(#000, $blue-earth, 20%);

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