Dark Sky

CSS

:root {
  --dark-sky: #909989;
  --dark-sky-rgb: 144 153 137;
  --dark-sky-oklch: oklch(0.671 0.025 131.3);
}

.element {
  color: var(--dark-sky);
  background-color: hsl(94 7% 57%);
  border-color: oklch(0.671 0.025 131.3);
}

Tailwind CSS v4

@theme {
  --color-dark-sky: #909989;
  --color-dark-sky-50: #f2f7ef;
  --color-dark-sky-100: #e4eae1;
  --color-dark-sky-200: #d0d7cc;
  --color-dark-sky-300: #b2baad;
  --color-dark-sky-400: #99a292;
  --color-dark-sky-500: #808a79;
  --color-dark-sky-600: #6d7566;
  --color-dark-sky-700: #575d52;
  --color-dark-sky-800: #40443b;
  --color-dark-sky-900: #2c2f28;
  --color-dark-sky-950: #191c16;
}

SCSS

$dark-sky: #909989;
$dark-sky-rgb: 144, 153, 137;
$dark-sky-light: mix(#fff, $dark-sky, 20%);
$dark-sky-dark: mix(#000, $dark-sky, 20%);

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