Shiny Nickel

CSS

:root {
  --shiny-nickel: #ccd3d8;
  --shiny-nickel-rgb: 204 211 216;
  --shiny-nickel-oklch: oklch(0.863 0.01 238.5);
}

.element {
  color: var(--shiny-nickel);
  background-color: hsl(205 13% 82%);
  border-color: oklch(0.863 0.01 238.5);
}

Tailwind CSS v4

@theme {
  --color-shiny-nickel: #ccd3d8;
  --color-shiny-nickel-50: #f3f5f8;
  --color-shiny-nickel-100: #e5e8eb;
  --color-shiny-nickel-200: #d0d5d8;
  --color-shiny-nickel-300: #b3b8bc;
  --color-shiny-nickel-400: #999fa4;
  --color-shiny-nickel-500: #80878c;
  --color-shiny-nickel-600: #6d7277;
  --color-shiny-nickel-700: #575c5f;
  --color-shiny-nickel-800: #3f4345;
  --color-shiny-nickel-900: #2b2e30;
  --color-shiny-nickel-950: #191b1c;
}

SCSS

$shiny-nickel: #ccd3d8;
$shiny-nickel-rgb: 204, 211, 216;
$shiny-nickel-light: mix(#fff, $shiny-nickel, 20%);
$shiny-nickel-dark: mix(#000, $shiny-nickel, 20%);

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