Nuts and Bolts

CSS

:root {
  --nuts-and-bolts: #898c92;
  --nuts-and-bolts-rgb: 137 140 146;
  --nuts-and-bolts-oklch: oklch(0.639 0.01 264.5);
}

.element {
  color: var(--nuts-and-bolts);
  background-color: hsl(220 4% 55%);
  border-color: oklch(0.639 0.01 264.5);
}

Tailwind CSS v4

@theme {
  --color-nuts-and-bolts: #898c92;
  --color-nuts-and-bolts-50: #f4f5f8;
  --color-nuts-and-bolts-100: #e6e8eb;
  --color-nuts-and-bolts-200: #d2d4d8;
  --color-nuts-and-bolts-300: #b5b7bc;
  --color-nuts-and-bolts-400: #9b9ea4;
  --color-nuts-and-bolts-500: #83868d;
  --color-nuts-and-bolts-600: #6f7277;
  --color-nuts-and-bolts-700: #595b5f;
  --color-nuts-and-bolts-800: #414246;
  --color-nuts-and-bolts-900: #2c2e30;
  --color-nuts-and-bolts-950: #1a1b1d;
}

SCSS

$nuts-and-bolts: #898c92;
$nuts-and-bolts-rgb: 137, 140, 146;
$nuts-and-bolts-light: mix(#fff, $nuts-and-bolts, 20%);
$nuts-and-bolts-dark: mix(#000, $nuts-and-bolts, 20%);

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