October Sky

CSS

:root {
  --october-sky: #8fa2a2;
  --october-sky-rgb: 143 162 162;
  --october-sky-oklch: oklch(0.697 0.021 196.7);
}

.element {
  color: var(--october-sky);
  background-color: hsl(180 9% 60%);
  border-color: oklch(0.697 0.021 196.7);
}

Tailwind CSS v4

@theme {
  --color-october-sky: #8fa2a2;
  --color-october-sky-50: #eef7f7;
  --color-october-sky-100: #e0eaea;
  --color-october-sky-200: #cad7d7;
  --color-october-sky-300: #abbbbb;
  --color-october-sky-400: #91a3a3;
  --color-october-sky-500: #768b8b;
  --color-october-sky-600: #647575;
  --color-october-sky-700: #505e5e;
  --color-october-sky-800: #3a4545;
  --color-october-sky-900: #28302f;
  --color-october-sky-950: #161c1c;
}

SCSS

$october-sky: #8fa2a2;
$october-sky-rgb: 143, 162, 162;
$october-sky-light: mix(#fff, $october-sky, 20%);
$october-sky-dark: mix(#000, $october-sky, 20%);

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