#01060E

CSS

:root {
  --eight-ball: #01060e;
  --eight-ball-rgb: 1 6 14;
  --eight-ball-oklch: oklch(0.119 0.025 247.3);
}

.element {
  color: var(--eight-ball);
  background-color: hsl(217 87% 3%);
  border-color: oklch(0.119 0.025 247.3);
}

Tailwind CSS v4

@theme {
  --color-eight-ball: #01060e;
  --color-eight-ball-50: #f0f6fc;
  --color-eight-ball-100: #e2e9f0;
  --color-eight-ball-200: #ccd5df;
  --color-eight-ball-300: #aeb9c4;
  --color-eight-ball-400: #93a0ad;
  --color-eight-ball-500: #7a8896;
  --color-eight-ball-600: #67737f;
  --color-eight-ball-700: #525c66;
  --color-eight-ball-800: #3b434b;
  --color-eight-ball-900: #292f34;
  --color-eight-ball-950: #171b1f;
}

SCSS

$eight-ball: #01060e;
$eight-ball-rgb: 1, 6, 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);
}