High-Speed Steel

CSS

:root {
  --high-speed-steel: #6d7074;
  --high-speed-steel-rgb: 109 112 116;
  --high-speed-steel-oklch: oklch(0.544 0.007 255.5);
}

.element {
  color: var(--high-speed-steel);
  background-color: hsl(214 3% 44%);
  border-color: oklch(0.544 0.007 255.5);
}

Tailwind CSS v4

@theme {
  --color-high-speed-steel: #6d7074;
  --color-high-speed-steel-50: #f4f5f7;
  --color-high-speed-steel-100: #e6e8ea;
  --color-high-speed-steel-200: #d2d4d7;
  --color-high-speed-steel-300: #b5b7bb;
  --color-high-speed-steel-400: #9c9fa3;
  --color-high-speed-steel-500: #83868b;
  --color-high-speed-steel-600: #6f7276;
  --color-high-speed-steel-700: #595b5e;
  --color-high-speed-steel-800: #414245;
  --color-high-speed-steel-900: #2d2e30;
  --color-high-speed-steel-950: #1a1b1c;
}

SCSS

$high-speed-steel: #6d7074;
$high-speed-steel-rgb: 109, 112, 116;
$high-speed-steel-light: mix(#fff, $high-speed-steel, 20%);
$high-speed-steel-dark: mix(#000, $high-speed-steel, 20%);

.element {
  color: $high-speed-steel;
  box-shadow: 0 0 0 2px rgba($high-speed-steel, 0.35);
}