#A36667

CSS

:root {
  --cinnapink: #a36667;
  --cinnapink-rgb: 163 102 103;
  --cinnapink-oklch: oklch(0.577 0.079 18.7);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(359 25% 52%);
  border-color: oklch(0.577 0.079 18.7);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a36667;
  --color-cinnapink-50: #ffedeb;
  --color-cinnapink-100: #ffdedd;
  --color-cinnapink-200: #f5c8c6;
  --color-cinnapink-300: #dda8a6;
  --color-cinnapink-400: #c98c8c;
  --color-cinnapink-500: #b57072;
  --color-cinnapink-600: #995f60;
  --color-cinnapink-700: #7a4c4d;
  --color-cinnapink-800: #5b3739;
  --color-cinnapink-900: #3f2627;
  --color-cinnapink-950: #281415;
}

SCSS

$cinnapink: #a36667;
$cinnapink-rgb: 163, 102, 103;
$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);
}