#996771

CSS

:root {
  --cinnapink: #996771;
  --cinnapink-rgb: 153 103 113;
  --cinnapink-oklch: oklch(0.569 0.066 6.2);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(348 20% 50%);
  border-color: oklch(0.569 0.066 6.2);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #996771;
  --color-cinnapink-50: #ffeef1;
  --color-cinnapink-100: #fddfe3;
  --color-cinnapink-200: #efc9cf;
  --color-cinnapink-300: #d6aab1;
  --color-cinnapink-400: #c18f98;
  --color-cinnapink-500: #ac747f;
  --color-cinnapink-600: #91626c;
  --color-cinnapink-700: #754e56;
  --color-cinnapink-800: #563940;
  --color-cinnapink-900: #3c272c;
  --color-cinnapink-950: #261519;
}

SCSS

$cinnapink: #996771;
$cinnapink-rgb: 153, 103, 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);
}