#21150E

CSS

:root {
  --dark-orchestra: #21150e;
  --dark-orchestra-rgb: 33 21 14;
  --dark-orchestra-oklch: oklch(0.209 0.024 51.3);
}

.element {
  color: var(--dark-orchestra);
  background-color: hsl(22 40% 9%);
  border-color: oklch(0.209 0.024 51.3);
}

Tailwind CSS v4

@theme {
  --color-dark-orchestra: #21150e;
  --color-dark-orchestra-50: #fbf3ef;
  --color-dark-orchestra-100: #efe6e1;
  --color-dark-orchestra-200: #ddd2cb;
  --color-dark-orchestra-300: #c2b4ac;
  --color-dark-orchestra-400: #ab9b92;
  --color-dark-orchestra-500: #948278;
  --color-dark-orchestra-600: #7d6e66;
  --color-dark-orchestra-700: #645851;
  --color-dark-orchestra-800: #4a403b;
  --color-dark-orchestra-900: #332c29;
  --color-dark-orchestra-950: #1f1916;
}

SCSS

$dark-orchestra: #21150e;
$dark-orchestra-rgb: 33, 21, 14;
$dark-orchestra-light: mix(#fff, $dark-orchestra, 20%);
$dark-orchestra-dark: mix(#000, $dark-orchestra, 20%);

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