#A5637A

CSS

:root {
  --cinnapink: #a5637a;
  --cinnapink-rgb: 165 99 122;
  --cinnapink-oklch: oklch(0.58 0.09 357.9);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(339 27% 52%);
  border-color: oklch(0.58 0.09 357.9);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a5637a;
  --color-cinnapink-50: #ffebf4;
  --color-cinnapink-100: #ffdce7;
  --color-cinnapink-200: #f6c5d3;
  --color-cinnapink-300: #dfa5b5;
  --color-cinnapink-400: #ca889e;
  --color-cinnapink-500: #b66c86;
  --color-cinnapink-600: #9a5c71;
  --color-cinnapink-700: #7b495b;
  --color-cinnapink-800: #5b3543;
  --color-cinnapink-900: #40242f;
  --color-cinnapink-950: #28131b;
}

SCSS

$cinnapink: #a5637a;
$cinnapink-rgb: 165, 99, 122;
$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);
}