#F8F1ED

CSS

:root {
  --silver-bird: #f8f1ed;
  --silver-bird-rgb: 248 241 237;
  --silver-bird-oklch: oklch(0.962 0.009 52.1);
}

.element {
  color: var(--silver-bird);
  background-color: hsl(22 44% 95%);
  border-color: oklch(0.962 0.009 52.1);
}

Tailwind CSS v4

@theme {
  --color-silver-bird: #f8f1ed;
  --color-silver-bird-50: #f7f4f3;
  --color-silver-bird-100: #eae7e5;
  --color-silver-bird-200: #d7d3d0;
  --color-silver-bird-300: #bbb6b3;
  --color-silver-bird-400: #a39d99;
  --color-silver-bird-500: #8b8581;
  --color-silver-bird-600: #76706d;
  --color-silver-bird-700: #5e5a57;
  --color-silver-bird-800: #454140;
  --color-silver-bird-900: #302d2c;
  --color-silver-bird-950: #1c1a19;
}

SCSS

$silver-bird: #f8f1ed;
$silver-bird-rgb: 248, 241, 237;
$silver-bird-light: mix(#fff, $silver-bird, 20%);
$silver-bird-dark: mix(#000, $silver-bird, 20%);

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