#996975

CSS

:root {
  --cinnapink: #996975;
  --cinnapink-rgb: 153 105 117;
  --cinnapink-oklch: oklch(0.574 0.063 2.9);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(345 19% 51%);
  border-color: oklch(0.574 0.063 2.9);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #996975;
  --color-cinnapink-50: #ffeef3;
  --color-cinnapink-100: #fce0e5;
  --color-cinnapink-200: #edcad0;
  --color-cinnapink-300: #d5aab3;
  --color-cinnapink-400: #bf8f9b;
  --color-cinnapink-500: #aa7582;
  --color-cinnapink-600: #90636e;
  --color-cinnapink-700: #734f58;
  --color-cinnapink-800: #553941;
  --color-cinnapink-900: #3b272d;
  --color-cinnapink-950: #25151a;
}

SCSS

$cinnapink: #996975;
$cinnapink-rgb: 153, 105, 117;
$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);
}