#01070E

CSS

:root {
  --eight-ball: #01070e;
  --eight-ball-rgb: 1 7 14;
  --eight-ball-oklch: oklch(0.123 0.023 240.5);
}

.element {
  color: var(--eight-ball);
  background-color: hsl(212 87% 3%);
  border-color: oklch(0.123 0.023 240.5);
}

Tailwind CSS v4

@theme {
  --color-eight-ball: #01070e;
  --color-eight-ball-50: #f0f6fb;
  --color-eight-ball-100: #e1e9ef;
  --color-eight-ball-200: #ccd6de;
  --color-eight-ball-300: #aeb9c3;
  --color-eight-ball-400: #93a1ab;
  --color-eight-ball-500: #798994;
  --color-eight-ball-600: #66747d;
  --color-eight-ball-700: #525c64;
  --color-eight-ball-800: #3b444a;
  --color-eight-ball-900: #292f33;
  --color-eight-ball-950: #161b1f;
}

SCSS

$eight-ball: #01070e;
$eight-ball-rgb: 1, 7, 14;
$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);
}