#824D58

CSS

:root {
  --nocturne-red: #824d58;
  --nocturne-red-rgb: 130 77 88;
  --nocturne-red-oklch: oklch(0.485 0.073 6.7);
}

.element {
  color: var(--nocturne-red);
  background-color: hsl(348 26% 41%);
  border-color: oklch(0.485 0.073 6.7);
}

Tailwind CSS v4

@theme {
  --color-nocturne-red: #824d58;
  --color-nocturne-red-50: #ffedf1;
  --color-nocturne-red-100: #ffdee3;
  --color-nocturne-red-200: #f1c8ce;
  --color-nocturne-red-300: #d9a9b0;
  --color-nocturne-red-400: #c58d97;
  --color-nocturne-red-500: #b0727e;
  --color-nocturne-red-600: #95606b;
  --color-nocturne-red-700: #774d55;
  --color-nocturne-red-800: #58383f;
  --color-nocturne-red-900: #3e262b;
  --color-nocturne-red-950: #271419;
}

SCSS

$nocturne-red: #824d58;
$nocturne-red-rgb: 130, 77, 88;
$nocturne-red-light: mix(#fff, $nocturne-red, 20%);
$nocturne-red-dark: mix(#000, $nocturne-red, 20%);

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