#9C6779

CSS

:root {
  --never-forget: #9c6779;
  --never-forget-rgb: 156 103 121;
  --never-forget-oklch: oklch(0.575 0.072 357.6);
}

.element {
  color: var(--never-forget);
  background-color: hsl(340 21% 51%);
  border-color: oklch(0.575 0.072 357.6);
}

Tailwind CSS v4

@theme {
  --color-never-forget: #9c6779;
  --color-never-forget-50: #ffedf4;
  --color-never-forget-100: #fedee7;
  --color-never-forget-200: #f0c8d3;
  --color-never-forget-300: #d8a9b6;
  --color-never-forget-400: #c28d9e;
  --color-never-forget-500: #ad7286;
  --color-never-forget-600: #926172;
  --color-never-forget-700: #754d5b;
  --color-never-forget-800: #573843;
  --color-never-forget-900: #3c262e;
  --color-never-forget-950: #26141b;
}

SCSS

$never-forget: #9c6779;
$never-forget-rgb: 156, 103, 121;
$never-forget-light: mix(#fff, $never-forget, 20%);
$never-forget-dark: mix(#000, $never-forget, 20%);

.element {
  color: $never-forget;
  box-shadow: 0 0 0 2px rgba($never-forget, 0.35);
}