Shiny Armour

CSS

:root {
  --shiny-armour: #a1a9a8;
  --shiny-armour-rgb: 161 169 168;
  --shiny-armour-oklch: oklch(0.728 0.009 188);
}

.element {
  color: var(--shiny-armour);
  background-color: hsl(173 4% 65%);
  border-color: oklch(0.728 0.009 188);
}

Tailwind CSS v4

@theme {
  --color-shiny-armour: #a1a9a8;
  --color-shiny-armour-50: #f2f6f6;
  --color-shiny-armour-100: #e5e9e8;
  --color-shiny-armour-200: #d0d5d5;
  --color-shiny-armour-300: #b2b9b8;
  --color-shiny-armour-400: #99a09f;
  --color-shiny-armour-500: #808887;
  --color-shiny-armour-600: #6c7372;
  --color-shiny-armour-700: #565c5b;
  --color-shiny-armour-800: #3f4343;
  --color-shiny-armour-900: #2b2f2e;
  --color-shiny-armour-950: #191b1b;
}

SCSS

$shiny-armour: #a1a9a8;
$shiny-armour-rgb: 161, 169, 168;
$shiny-armour-light: mix(#fff, $shiny-armour, 20%);
$shiny-armour-dark: mix(#000, $shiny-armour, 20%);

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