#A1636A

CSS

:root {
  --cinnapink: #a1636a;
  --cinnapink-rgb: 161 99 106;
  --cinnapink-oklch: oklch(0.57 0.081 12.6);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(353 25% 51%);
  border-color: oklch(0.57 0.081 12.6);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a1636a;
  --color-cinnapink-50: #ffecee;
  --color-cinnapink-100: #ffdedf;
  --color-cinnapink-200: #f5c7c9;
  --color-cinnapink-300: #dea7aa;
  --color-cinnapink-400: #c98b91;
  --color-cinnapink-500: #b56f77;
  --color-cinnapink-600: #995e65;
  --color-cinnapink-700: #7b4b51;
  --color-cinnapink-800: #5b363c;
  --color-cinnapink-900: #402529;
  --color-cinnapink-950: #281417;
}

SCSS

$cinnapink: #a1636a;
$cinnapink-rgb: 161, 99, 106;
$cinnapink-light: mix(#fff, $cinnapink, 20%);
$cinnapink-dark: mix(#000, $cinnapink, 20%);

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