#9C6669

CSS

:root {
  --cinnapink: #9c6669;
  --cinnapink-rgb: 156 102 105;
  --cinnapink-oklch: oklch(0.569 0.07 15.9);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(357 21% 51%);
  border-color: oklch(0.569 0.07 15.9);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #9c6669;
  --color-cinnapink-50: #ffeeee;
  --color-cinnapink-100: #ffdfdf;
  --color-cinnapink-200: #f1c9c9;
  --color-cinnapink-300: #d9aaaa;
  --color-cinnapink-400: #c48e90;
  --color-cinnapink-500: #b07376;
  --color-cinnapink-600: #946264;
  --color-cinnapink-700: #774e50;
  --color-cinnapink-800: #58383b;
  --color-cinnapink-900: #3e2728;
  --color-cinnapink-950: #271516;
}

SCSS

$cinnapink: #9c6669;
$cinnapink-rgb: 156, 102, 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);
}