#A36269

CSS

:root {
  --cinnapink: #a36269;
  --cinnapink-rgb: 163 98 105;
  --cinnapink-oklch: oklch(0.57 0.085 13.1);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(354 26% 51%);
  border-color: oklch(0.57 0.085 13.1);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a36269;
  --color-cinnapink-50: #ffeced;
  --color-cinnapink-100: #ffdddf;
  --color-cinnapink-200: #f6c6c8;
  --color-cinnapink-300: #dfa6a9;
  --color-cinnapink-400: #cb8a90;
  --color-cinnapink-500: #b76e76;
  --color-cinnapink-600: #9b5d64;
  --color-cinnapink-700: #7c4b50;
  --color-cinnapink-800: #5c363b;
  --color-cinnapink-900: #402528;
  --color-cinnapink-950: #291316;
}

SCSS

$cinnapink: #a36269;
$cinnapink-rgb: 163, 98, 105;
$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);
}