#966B77

CSS

:root {
  --never-forget: #966b77;
  --never-forget-rgb: 150 107 119;
  --never-forget-oklch: oklch(0.575 0.057 0.7);
}

.element {
  color: var(--never-forget);
  background-color: hsl(343 17% 50%);
  border-color: oklch(0.575 0.057 0.7);
}

Tailwind CSS v4

@theme {
  --color-never-forget: #966b77;
  --color-never-forget-50: #ffeff3;
  --color-never-forget-100: #fae0e6;
  --color-never-forget-200: #ebcbd2;
  --color-never-forget-300: #d2acb5;
  --color-never-forget-400: #bc919c;
  --color-never-forget-500: #a77684;
  --color-never-forget-600: #8d6470;
  --color-never-forget-700: #715059;
  --color-never-forget-800: #533a42;
  --color-never-forget-900: #3a282d;
  --color-never-forget-950: #24161a;
}

SCSS

$never-forget: #966b77;
$never-forget-rgb: 150, 107, 119;
$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);
}