#A66070

CSS

:root {
  --cinnapink: #a66070;
  --cinnapink-rgb: 166 96 112;
  --cinnapink-oklch: oklch(0.573 0.093 5.7);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(346 28% 51%);
  border-color: oklch(0.573 0.093 5.7);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a66070;
  --color-cinnapink-50: #ffebf0;
  --color-cinnapink-100: #ffdce2;
  --color-cinnapink-200: #f8c5cd;
  --color-cinnapink-300: #e2a4af;
  --color-cinnapink-400: #ce8796;
  --color-cinnapink-500: #ba6b7d;
  --color-cinnapink-600: #9d5b6a;
  --color-cinnapink-700: #7e4855;
  --color-cinnapink-800: #5d343f;
  --color-cinnapink-900: #41242b;
  --color-cinnapink-950: #2a1219;
}

SCSS

$cinnapink: #a66070;
$cinnapink-rgb: 166, 96, 112;
$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);
}