River Clay

CSS

:root {
  --river-clay: #c7b5a9;
  --river-clay-rgb: 199 181 169;
  --river-clay-oklch: oklch(0.785 0.027 56);
}

.element {
  color: var(--river-clay);
  background-color: hsl(24 21% 72%);
  border-color: oklch(0.785 0.027 56);
}

Tailwind CSS v4

@theme {
  --color-river-clay: #c7b5a9;
  --color-river-clay-50: #fbf3ee;
  --color-river-clay-100: #efe6df;
  --color-river-clay-200: #ddd2c9;
  --color-river-clay-300: #c2b4aa;
  --color-river-clay-400: #ab9b90;
  --color-river-clay-500: #958276;
  --color-river-clay-600: #7e6e64;
  --color-river-clay-700: #655850;
  --color-river-clay-800: #4a403a;
  --color-river-clay-900: #332c28;
  --color-river-clay-950: #1f1916;
}

SCSS

$river-clay: #c7b5a9;
$river-clay-rgb: 199, 181, 169;
$river-clay-light: mix(#fff, $river-clay, 20%);
$river-clay-dark: mix(#000, $river-clay, 20%);

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