#7C515C

CSS

:root {
  --nocturne-red: #7c515c;
  --nocturne-red-rgb: 124 81 92;
  --nocturne-red-oklch: oklch(0.486 0.059 2.8);
}

.element {
  color: var(--nocturne-red);
  background-color: hsl(345 21% 40%);
  border-color: oklch(0.486 0.059 2.8);
}

Tailwind CSS v4

@theme {
  --color-nocturne-red: #7c515c;
  --color-nocturne-red-50: #ffeff3;
  --color-nocturne-red-100: #fbe0e5;
  --color-nocturne-red-200: #eccad1;
  --color-nocturne-red-300: #d3abb3;
  --color-nocturne-red-400: #be909b;
  --color-nocturne-red-500: #a87682;
  --color-nocturne-red-600: #8e646e;
  --color-nocturne-red-700: #725058;
  --color-nocturne-red-800: #543a41;
  --color-nocturne-red-900: #3b282d;
  --color-nocturne-red-950: #25161a;
}

SCSS

$nocturne-red: #7c515c;
$nocturne-red-rgb: 124, 81, 92;
$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);
}