#A1666B

CSS

:root {
  --cinnapink: #a1666b;
  --cinnapink-rgb: 161 102 107;
  --cinnapink-oklch: oklch(0.575 0.076 14.2);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(355 24% 52%);
  border-color: oklch(0.575 0.076 14.2);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a1666b;
  --color-cinnapink-50: #ffedee;
  --color-cinnapink-100: #ffdedf;
  --color-cinnapink-200: #f3c8c9;
  --color-cinnapink-300: #dca8aa;
  --color-cinnapink-400: #c78c90;
  --color-cinnapink-500: #b37176;
  --color-cinnapink-600: #976064;
  --color-cinnapink-700: #794c50;
  --color-cinnapink-800: #5a373b;
  --color-cinnapink-900: #3f2629;
  --color-cinnapink-950: #281416;
}

SCSS

$cinnapink: #a1666b;
$cinnapink-rgb: 161, 102, 107;
$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);
}