#7B5454

CSS

:root {
  --veil-of-cinder: #7b5454;
  --veil-of-cinder-rgb: 123 84 84;
  --veil-of-cinder-oklch: oklch(0.488 0.052 19.1);
}

.element {
  color: var(--veil-of-cinder);
  background-color: hsl(0 19% 41%);
  border-color: oklch(0.488 0.052 19.1);
}

Tailwind CSS v4

@theme {
  --color-veil-of-cinder: #7b5454;
  --color-veil-of-cinder-50: #fff0ef;
  --color-veil-of-cinder-100: #f9e1e0;
  --color-veil-of-cinder-200: #eacccb;
  --color-veil-of-cinder-300: #d1adac;
  --color-veil-of-cinder-400: #bc9392;
  --color-veil-of-cinder-500: #a67978;
  --color-veil-of-cinder-600: #8d6666;
  --color-veil-of-cinder-700: #715251;
  --color-veil-of-cinder-800: #533b3c;
  --color-veil-of-cinder-900: #3a2929;
  --color-veil-of-cinder-950: #241617;
}

SCSS

$veil-of-cinder: #7b5454;
$veil-of-cinder-rgb: 123, 84, 84;
$veil-of-cinder-light: mix(#fff, $veil-of-cinder, 20%);
$veil-of-cinder-dark: mix(#000, $veil-of-cinder, 20%);

.element {
  color: $veil-of-cinder;
  box-shadow: 0 0 0 2px rgba($veil-of-cinder, 0.35);
}