#A66373

CSS

:root {
  --cinnapink: #a66373;
  --cinnapink-rgb: 166 99 115;
  --cinnapink-oklch: oklch(0.579 0.089 4.8);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(346 27% 52%);
  border-color: oklch(0.579 0.089 4.8);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a66373;
  --color-cinnapink-50: #ffebf1;
  --color-cinnapink-100: #ffdce3;
  --color-cinnapink-200: #f7c5ce;
  --color-cinnapink-300: #e0a5b0;
  --color-cinnapink-400: #cc8897;
  --color-cinnapink-500: #b76c7e;
  --color-cinnapink-600: #9b5c6b;
  --color-cinnapink-700: #7c4956;
  --color-cinnapink-800: #5c353f;
  --color-cinnapink-900: #40242c;
  --color-cinnapink-950: #291319;
}

SCSS

$cinnapink: #a66373;
$cinnapink-rgb: 166, 99, 115;
$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);
}