Black Forest Blue

CSS

:root {
  --black-forest-blue: #29485a;
  --black-forest-blue-rgb: 41 72 90;
  --black-forest-blue-oklch: oklch(0.386 0.048 235.4);
}

.element {
  color: var(--black-forest-blue);
  background-color: hsl(202 37% 26%);
  border-color: oklch(0.386 0.048 235.4);
}

Tailwind CSS v4

@theme {
  --color-black-forest-blue: #29485a;
  --color-black-forest-blue-50: #e9f8ff;
  --color-black-forest-blue-100: #daebf6;
  --color-black-forest-blue-200: #c2d8e7;
  --color-black-forest-blue-300: #a1bccd;
  --color-black-forest-blue-400: #84a4b7;
  --color-black-forest-blue-500: #678ca2;
  --color-black-forest-blue-600: #587689;
  --color-black-forest-blue-700: #465f6e;
  --color-black-forest-blue-800: #324550;
  --color-black-forest-blue-900: #223038;
  --color-black-forest-blue-950: #111c23;
}

SCSS

$black-forest-blue: #29485a;
$black-forest-blue-rgb: 41, 72, 90;
$black-forest-blue-light: mix(#fff, $black-forest-blue, 20%);
$black-forest-blue-dark: mix(#000, $black-forest-blue, 20%);

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