#20122A

CSS

:root {
  --shot-in-the-dark: #20122a;
  --shot-in-the-dark-rgb: 32 18 42;
  --shot-in-the-dark-oklch: oklch(0.214 0.049 309.7);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(275 40% 12%);
  border-color: oklch(0.214 0.049 309.7);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #20122a;
  --color-shot-in-the-dark-50: #faf1ff;
  --color-shot-in-the-dark-100: #ede4f4;
  --color-shot-in-the-dark-200: #dbcfe4;
  --color-shot-in-the-dark-300: #c0b1ca;
  --color-shot-in-the-dark-400: #a797b5;
  --color-shot-in-the-dark-500: #907d9f;
  --color-shot-in-the-dark-600: #7a6a86;
  --color-shot-in-the-dark-700: #62556c;
  --color-shot-in-the-dark-800: #473e50;
  --color-shot-in-the-dark-900: #312b38;
  --color-shot-in-the-dark-950: #1d1822;
}

SCSS

$shot-in-the-dark: #20122a;
$shot-in-the-dark-rgb: 32, 18, 42;
$shot-in-the-dark-light: mix(#fff, $shot-in-the-dark, 20%);
$shot-in-the-dark-dark: mix(#000, $shot-in-the-dark, 20%);

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