#419ABD

CSS

:root {
  --blue-ocean: #419abd;
  --blue-ocean-rgb: 65 154 189;
  --blue-ocean-oklch: oklch(0.647 0.099 227.3);
}

.element {
  color: var(--blue-ocean);
  background-color: hsl(197 49% 50%);
  border-color: oklch(0.647 0.099 227.3);
}

Tailwind CSS v4

@theme {
  --color-blue-ocean: #419abd;
  --color-blue-ocean-50: #d9fbff;
  --color-blue-ocean-100: #c7efff;
  --color-blue-ocean-200: #a9ddf6;
  --color-blue-ocean-300: #81c2e0;
  --color-blue-ocean-400: #58aacc;
  --color-blue-ocean-500: #2792b9;
  --color-blue-ocean-600: #257c9c;
  --color-blue-ocean-700: #1d637d;
  --color-blue-ocean-800: #11495c;
  --color-blue-ocean-900: #0b3340;
  --color-blue-ocean-950: #001e29;
}

SCSS

$blue-ocean: #419abd;
$blue-ocean-rgb: 65, 154, 189;
$blue-ocean-light: mix(#fff, $blue-ocean, 20%);
$blue-ocean-dark: mix(#000, $blue-ocean, 20%);

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