#0E0207

CSS

:root {
  --dark-matter: #0e0207;
  --dark-matter-rgb: 14 2 7;
  --dark-matter-oklch: oklch(0.119 0.033 350);
}

.element {
  color: var(--dark-matter);
  background-color: hsl(335 75% 3%);
  border-color: oklch(0.119 0.033 350);
}

Tailwind CSS v4

@theme {
  --color-dark-matter: #0e0207;
  --color-dark-matter-50: #fdf1f6;
  --color-dark-matter-100: #f1e4e9;
  --color-dark-matter-200: #e0cfd6;
  --color-dark-matter-300: #c6b1b9;
  --color-dark-matter-400: #ae97a1;
  --color-dark-matter-500: #987e89;
  --color-dark-matter-600: #806a74;
  --color-dark-matter-700: #67555d;
  --color-dark-matter-800: #4b3e44;
  --color-dark-matter-900: #342b2f;
  --color-dark-matter-950: #20181c;
}

SCSS

$dark-matter: #0e0207;
$dark-matter-rgb: 14, 2, 7;
$dark-matter-light: mix(#fff, $dark-matter, 20%);
$dark-matter-dark: mix(#000, $dark-matter, 20%);

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