#01070C

CSS

:root {
  --eight-ball: #01070c;
  --eight-ball-rgb: 1 7 12;
  --eight-ball-oklch: oklch(0.122 0.02 231.9);
}

.element {
  color: var(--eight-ball);
  background-color: hsl(207 85% 3%);
  border-color: oklch(0.122 0.02 231.9);
}

Tailwind CSS v4

@theme {
  --color-eight-ball: #01070c;
  --color-eight-ball-50: #f0f6fa;
  --color-eight-ball-100: #e2e9ee;
  --color-eight-ball-200: #ccd6dc;
  --color-eight-ball-300: #aeb9c0;
  --color-eight-ball-400: #93a1a8;
  --color-eight-ball-500: #798991;
  --color-eight-ball-600: #67747b;
  --color-eight-ball-700: #525d62;
  --color-eight-ball-800: #3c4448;
  --color-eight-ball-900: #292f32;
  --color-eight-ball-950: #171b1e;
}

SCSS

$eight-ball: #01070c;
$eight-ball-rgb: 1, 7, 12;
$eight-ball-light: mix(#fff, $eight-ball, 20%);
$eight-ball-dark: mix(#000, $eight-ball, 20%);

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