#1C7591

CSS

:root {
  --blue-fjord: #1c7591;
  --blue-fjord-rgb: 28 117 145;
  --blue-fjord-oklch: oklch(0.525 0.09 224.3);
}

.element {
  color: var(--blue-fjord);
  background-color: hsl(194 68% 34%);
  border-color: oklch(0.525 0.09 224.3);
}

Tailwind CSS v4

@theme {
  --color-blue-fjord: #1c7591;
  --color-blue-fjord-50: #dbfbff;
  --color-blue-fjord-100: #c9efff;
  --color-blue-fjord-200: #acddf2;
  --color-blue-fjord-300: #85c1db;
  --color-blue-fjord-400: #5eaac6;
  --color-blue-fjord-500: #3393b3;
  --color-blue-fjord-600: #2d7c97;
  --color-blue-fjord-700: #246379;
  --color-blue-fjord-800: #174959;
  --color-blue-fjord-900: #0f333e;
  --color-blue-fjord-950: #021e27;
}

SCSS

$blue-fjord: #1c7591;
$blue-fjord-rgb: 28, 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);
}