Dark and Stormy Night

CSS

:root {
  --dark-and-stormy-night: #4f5a62;
  --dark-and-stormy-night-rgb: 79 90 98;
  --dark-and-stormy-night-oklch: oklch(0.461 0.019 239.5);
}

.element {
  color: var(--dark-and-stormy-night);
  background-color: hsl(205 11% 35%);
  border-color: oklch(0.461 0.019 239.5);
}

Tailwind CSS v4

@theme {
  --color-dark-and-stormy-night: #4f5a62;
  --color-dark-and-stormy-night-50: #f1f6fa;
  --color-dark-and-stormy-night-100: #e3e9ee;
  --color-dark-and-stormy-night-200: #cdd5dc;
  --color-dark-and-stormy-night-300: #afb9c0;
  --color-dark-and-stormy-night-400: #95a0a9;
  --color-dark-and-stormy-night-500: #7b8892;
  --color-dark-and-stormy-night-600: #68737b;
  --color-dark-and-stormy-night-700: #535c63;
  --color-dark-and-stormy-night-800: #3c4348;
  --color-dark-and-stormy-night-900: #2a2f32;
  --color-dark-and-stormy-night-950: #171b1e;
}

SCSS

$dark-and-stormy-night: #4f5a62;
$dark-and-stormy-night-rgb: 79, 90, 98;
$dark-and-stormy-night-light: mix(#fff, $dark-and-stormy-night, 20%);
$dark-and-stormy-night-dark: mix(#000, $dark-and-stormy-night, 20%);

.element {
  color: $dark-and-stormy-night;
  box-shadow: 0 0 0 2px rgba($dark-and-stormy-night, 0.35);
}