Black Heron

CSS

:root {
  --black-heron: #444647;
  --black-heron-rgb: 68 70 71;
  --black-heron-oklch: oklch(0.393 0.003 228.9);
}

.element {
  color: var(--black-heron);
  background-color: hsl(200 2% 27%);
  border-color: oklch(0.393 0.003 228.9);
}

Tailwind CSS v4

@theme {
  --color-black-heron: #444647;
  --color-black-heron-50: #f4f5f6;
  --color-black-heron-100: #e7e8e9;
  --color-black-heron-200: #d3d4d5;
  --color-black-heron-300: #b6b8b9;
  --color-black-heron-400: #9c9fa0;
  --color-black-heron-500: #848688;
  --color-black-heron-600: #707273;
  --color-black-heron-700: #595b5c;
  --color-black-heron-800: #414343;
  --color-black-heron-900: #2d2e2e;
  --color-black-heron-950: #1a1b1b;
}

SCSS

$black-heron: #444647;
$black-heron-rgb: 68, 70, 71;
$black-heron-light: mix(#fff, $black-heron, 20%);
$black-heron-dark: mix(#000, $black-heron, 20%);

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