Subtle Night Sky

CSS

:root {
  --subtle-night-sky: #554b4f;
  --subtle-night-sky-rgb: 85 75 79;
  --subtle-night-sky-oklch: oklch(0.424 0.015 351.6);
}

.element {
  color: var(--subtle-night-sky);
  background-color: hsl(336 6% 31%);
  border-color: oklch(0.424 0.015 351.6);
}

Tailwind CSS v4

@theme {
  --color-subtle-night-sky: #554b4f;
  --color-subtle-night-sky-50: #f9f3f5;
  --color-subtle-night-sky-100: #ece6e8;
  --color-subtle-night-sky-200: #dad2d5;
  --color-subtle-night-sky-300: #beb4b8;
  --color-subtle-night-sky-400: #a69b9f;
  --color-subtle-night-sky-500: #8e8287;
  --color-subtle-night-sky-600: #796e72;
  --color-subtle-night-sky-700: #60585b;
  --color-subtle-night-sky-800: #474043;
  --color-subtle-night-sky-900: #312c2e;
  --color-subtle-night-sky-950: #1d191b;
}

SCSS

$subtle-night-sky: #554b4f;
$subtle-night-sky-rgb: 85, 75, 79;
$subtle-night-sky-light: mix(#fff, $subtle-night-sky, 20%);
$subtle-night-sky-dark: mix(#000, $subtle-night-sky, 20%);

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