#A46264

CSS

:root {
  --cinnapink: #a46264;
  --cinnapink-rgb: 164 98 100;
  --cinnapink-oklch: oklch(0.57 0.086 18.2);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(358 27% 51%);
  border-color: oklch(0.57 0.086 18.2);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a46264;
  --color-cinnapink-50: #ffeceb;
  --color-cinnapink-100: #ffdddc;
  --color-cinnapink-200: #f7c6c5;
  --color-cinnapink-300: #e0a6a5;
  --color-cinnapink-400: #cc8a8b;
  --color-cinnapink-500: #b86e70;
  --color-cinnapink-600: #9c5d5f;
  --color-cinnapink-700: #7d4b4c;
  --color-cinnapink-800: #5c3638;
  --color-cinnapink-900: #412526;
  --color-cinnapink-950: #291315;
}

SCSS

$cinnapink: #a46264;
$cinnapink-rgb: 164, 98, 100;
$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);
}