#F6F2ED

CSS

:root {
  --silver-bird: #f6f2ed;
  --silver-bird-rgb: 246 242 237;
  --silver-bird-oklch: oklch(0.963 0.008 73.7);
}

.element {
  color: var(--silver-bird);
  background-color: hsl(33 33% 95%);
  border-color: oklch(0.963 0.008 73.7);
}

Tailwind CSS v4

@theme {
  --color-silver-bird: #f6f2ed;
  --color-silver-bird-50: #f6f5f3;
  --color-silver-bird-100: #e9e7e5;
  --color-silver-bird-200: #d6d4d0;
  --color-silver-bird-300: #bab7b3;
  --color-silver-bird-400: #a19e99;
  --color-silver-bird-500: #898580;
  --color-silver-bird-600: #74716d;
  --color-silver-bird-700: #5d5a57;
  --color-silver-bird-800: #44423f;
  --color-silver-bird-900: #2f2d2c;
  --color-silver-bird-950: #1c1a19;
}

SCSS

$silver-bird: #f6f2ed;
$silver-bird-rgb: 246, 242, 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);
}