#197591

CSS

:root {
  --blue-fjord: #197591;
  --blue-fjord-rgb: 25 117 145;
  --blue-fjord-oklch: oklch(0.525 0.091 223.9);
}

.element {
  color: var(--blue-fjord);
  background-color: hsl(194 71% 33%);
  border-color: oklch(0.525 0.091 223.9);
}

Tailwind CSS v4

@theme {
  --color-blue-fjord: #197591;
  --color-blue-fjord-50: #dbfbff;
  --color-blue-fjord-100: #c9efff;
  --color-blue-fjord-200: #abddf2;
  --color-blue-fjord-300: #84c2db;
  --color-blue-fjord-400: #5daac6;
  --color-blue-fjord-500: #3193b3;
  --color-blue-fjord-600: #2b7c97;
  --color-blue-fjord-700: #236379;
  --color-blue-fjord-800: #164959;
  --color-blue-fjord-900: #0e333e;
  --color-blue-fjord-950: #011e27;
}

SCSS

$blue-fjord: #197591;
$blue-fjord-rgb: 25, 117, 145;
$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);
}