Downing Street

CSS

:root {
  --downing-street: #4a4b57;
  --downing-street-rgb: 74 75 87;
  --downing-street-oklch: oklch(0.416 0.02 281.7);
}

.element {
  color: var(--downing-street);
  background-color: hsl(235 8% 32%);
  border-color: oklch(0.416 0.02 281.7);
}

Tailwind CSS v4

@theme {
  --color-downing-street: #4a4b57;
  --color-downing-street-50: #f4f4fb;
  --color-downing-street-100: #e7e7ee;
  --color-downing-street-200: #d3d3dd;
  --color-downing-street-300: #b6b6c2;
  --color-downing-street-400: #9c9daa;
  --color-downing-street-500: #848593;
  --color-downing-street-600: #6f707d;
  --color-downing-street-700: #595a64;
  --color-downing-street-800: #414249;
  --color-downing-street-900: #2d2d33;
  --color-downing-street-950: #1a1a1f;
}

SCSS

$downing-street: #4a4b57;
$downing-street-rgb: 74, 75, 87;
$downing-street-light: mix(#fff, $downing-street, 20%);
$downing-street-dark: mix(#000, $downing-street, 20%);

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