#290C2A

CSS

:root {
  --dark-prom-queen: #290c2a;
  --dark-prom-queen-rgb: 41 12 42;
  --dark-prom-queen-oklch: oklch(0.217 0.067 326.3);
}

.element {
  color: var(--dark-prom-queen);
  background-color: hsl(298 56% 11%);
  border-color: oklch(0.217 0.067 326.3);
}

Tailwind CSS v4

@theme {
  --color-dark-prom-queen: #290c2a;
  --color-dark-prom-queen-50: #ffefff;
  --color-dark-prom-queen-100: #f5e0f3;
  --color-dark-prom-queen-200: #e5cbe3;
  --color-dark-prom-queen-300: #cbacc9;
  --color-dark-prom-queen-400: #b491b4;
  --color-dark-prom-queen-500: #9e779e;
  --color-dark-prom-queen-600: #866586;
  --color-dark-prom-queen-700: #6b506b;
  --color-dark-prom-queen-800: #4e3a50;
  --color-dark-prom-queen-900: #362837;
  --color-dark-prom-queen-950: #211622;
}

SCSS

$dark-prom-queen: #290c2a;
$dark-prom-queen-rgb: 41, 12, 42;
$dark-prom-queen-light: mix(#fff, $dark-prom-queen, 20%);
$dark-prom-queen-dark: mix(#000, $dark-prom-queen, 20%);

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