Siliceous Red

CSS

:root {
  --siliceous-red: #5a3d4a;
  --siliceous-red-rgb: 90 61 74;
  --siliceous-red-oklch: oklch(0.397 0.045 350.8);
}

.element {
  color: var(--siliceous-red);
  background-color: hsl(333 19% 30%);
  border-color: oklch(0.397 0.045 350.8);
}

Tailwind CSS v4

@theme {
  --color-siliceous-red: #5a3d4a;
  --color-siliceous-red-50: #fff0f6;
  --color-siliceous-red-100: #f5e2e9;
  --color-siliceous-red-200: #e5cdd6;
  --color-siliceous-red-300: #cbaeb9;
  --color-siliceous-red-400: #b494a2;
  --color-siliceous-red-500: #9e7a8a;
  --color-siliceous-red-600: #866875;
  --color-siliceous-red-700: #6b535d;
  --color-siliceous-red-800: #4f3c45;
  --color-siliceous-red-900: #372930;
  --color-siliceous-red-950: #22171c;
}

SCSS

$siliceous-red: #5a3d4a;
$siliceous-red-rgb: 90, 61, 74;
$siliceous-red-light: mix(#fff, $siliceous-red, 20%);
$siliceous-red-dark: mix(#000, $siliceous-red, 20%);

.element {
  color: $siliceous-red;
  box-shadow: 0 0 0 2px rgba($siliceous-red, 0.35);
}