#A56264

CSS

:root {
  --cinnapink: #a56264;
  --cinnapink-rgb: 165 98 100;
  --cinnapink-oklch: oklch(0.571 0.087 18.2);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(358 27% 52%);
  border-color: oklch(0.571 0.087 18.2);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a56264;
  --color-cinnapink-50: #ffeceb;
  --color-cinnapink-100: #ffdddc;
  --color-cinnapink-200: #f8c6c5;
  --color-cinnapink-300: #e1a6a5;
  --color-cinnapink-400: #cd8a8b;
  --color-cinnapink-500: #b96e70;
  --color-cinnapink-600: #9c5d5f;
  --color-cinnapink-700: #7d4a4c;
  --color-cinnapink-800: #5d3538;
  --color-cinnapink-900: #412526;
  --color-cinnapink-950: #291315;
}

SCSS

$cinnapink: #a56264;
$cinnapink-rgb: 165, 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);
}