Marine Blue

CSS

:root {
  --marine-blue: #01386a;
  --marine-blue-rgb: 1 56 106;
  --marine-blue-oklch: oklch(0.339 0.102 252.3);
}

.element {
  color: var(--marine-blue);
  background-color: hsl(209 98% 21%);
  border-color: oklch(0.339 0.102 252.3);
}

Tailwind CSS v4

@theme {
  --color-marine-blue: #01386a;
  --color-marine-blue-50: #e2f7ff;
  --color-marine-blue-100: #d1eaff;
  --color-marine-blue-200: #b7d7ff;
  --color-marine-blue-300: #94bbeb;
  --color-marine-blue-400: #72a2d9;
  --color-marine-blue-500: #5289c7;
  --color-marine-blue-600: #4674a8;
  --color-marine-blue-700: #375d87;
  --color-marine-blue-800: #254464;
  --color-marine-blue-900: #192f46;
  --color-marine-blue-950: #091c2e;
}

SCSS

$marine-blue: #01386a;
$marine-blue-rgb: 1, 56, 106;
$marine-blue-light: mix(#fff, $marine-blue, 20%);
$marine-blue-dark: mix(#000, $marine-blue, 20%);

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