#A66469

CSS

:root {
  --cinnapink: #a66469;
  --cinnapink-rgb: 166 100 105;
  --cinnapink-oklch: oklch(0.578 0.086 15.2);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(355 27% 52%);
  border-color: oklch(0.578 0.086 15.2);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a66469;
  --color-cinnapink-50: #ffecec;
  --color-cinnapink-100: #ffddde;
  --color-cinnapink-200: #f7c6c7;
  --color-cinnapink-300: #e0a6a8;
  --color-cinnapink-400: #cc8a8e;
  --color-cinnapink-500: #b86e74;
  --color-cinnapink-600: #9b5d62;
  --color-cinnapink-700: #7d4a4e;
  --color-cinnapink-800: #5c363a;
  --color-cinnapink-900: #412528;
  --color-cinnapink-950: #291316;
}

SCSS

$cinnapink: #a66469;
$cinnapink-rgb: 166, 100, 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);
}