#536C9B

CSS

:root {
  --sea-of-galilee: #536c9b;
  --sea-of-galilee-rgb: 83 108 155;
  --sea-of-galilee-oklch: oklch(0.532 0.08 262.5);
}

.element {
  color: var(--sea-of-galilee);
  background-color: hsl(219 30% 47%);
  border-color: oklch(0.532 0.08 262.5);
}

Tailwind CSS v4

@theme {
  --color-sea-of-galilee: #536c9b;
  --color-sea-of-galilee-50: #eaf6ff;
  --color-sea-of-galilee-100: #dbe8ff;
  --color-sea-of-galilee-200: #c3d5f8;
  --color-sea-of-galilee-300: #a3b8e1;
  --color-sea-of-galilee-400: #859fce;
  --color-sea-of-galilee-500: #6986bc;
  --color-sea-of-galilee-600: #59719e;
  --color-sea-of-galilee-700: #475b7f;
  --color-sea-of-galilee-800: #32435e;
  --color-sea-of-galilee-900: #222e42;
  --color-sea-of-galilee-950: #111b2a;
}

SCSS

$sea-of-galilee: #536c9b;
$sea-of-galilee-rgb: 83, 108, 155;
$sea-of-galilee-light: mix(#fff, $sea-of-galilee, 20%);
$sea-of-galilee-dark: mix(#000, $sea-of-galilee, 20%);

.element {
  color: $sea-of-galilee;
  box-shadow: 0 0 0 2px rgba($sea-of-galilee, 0.35);
}