#047594

CSS

:root {
  --blue-fjord: #047594;
  --blue-fjord-rgb: 4 117 148;
  --blue-fjord-oklch: oklch(0.523 0.098 224.8);
}

.element {
  color: var(--blue-fjord);
  background-color: hsl(193 95% 30%);
  border-color: oklch(0.523 0.098 224.8);
}

Tailwind CSS v4

@theme {
  --color-blue-fjord: #047594;
  --color-blue-fjord-50: #d9fcff;
  --color-blue-fjord-100: #c6efff;
  --color-blue-fjord-200: #a8def5;
  --color-blue-fjord-300: #80c2de;
  --color-blue-fjord-400: #57abca;
  --color-blue-fjord-500: #2493b7;
  --color-blue-fjord-600: #227d9a;
  --color-blue-fjord-700: #1b647c;
  --color-blue-fjord-800: #0f4a5b;
  --color-blue-fjord-900: #0a3340;
  --color-blue-fjord-950: #001f29;
}

SCSS

$blue-fjord: #047594;
$blue-fjord-rgb: 4, 117, 148;
$blue-fjord-light: mix(#fff, $blue-fjord, 20%);
$blue-fjord-dark: mix(#000, $blue-fjord, 20%);

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