#A66071

CSS

:root {
  --cinnapink: #a66071;
  --cinnapink-rgb: 166 96 113;
  --cinnapink-oklch: oklch(0.573 0.093 4.8);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(345 28% 51%);
  border-color: oklch(0.573 0.093 4.8);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a66071;
  --color-cinnapink-50: #ffebf1;
  --color-cinnapink-100: #ffdce3;
  --color-cinnapink-200: #f8c4cd;
  --color-cinnapink-300: #e2a4af;
  --color-cinnapink-400: #cd8797;
  --color-cinnapink-500: #b96b7e;
  --color-cinnapink-600: #9d5b6b;
  --color-cinnapink-700: #7e4855;
  --color-cinnapink-800: #5d343f;
  --color-cinnapink-900: #41242c;
  --color-cinnapink-950: #2a1219;
}

SCSS

$cinnapink: #a66071;
$cinnapink-rgb: 166, 96, 113;
$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);
}