#F0EFE9

CSS

:root {
  --salt: #f0efe9;
  --salt-rgb: 240 239 233;
  --salt-oklch: oklch(0.951 0.008 98.9);
}

.element {
  color: var(--salt);
  background-color: hsl(51 19% 93%);
  border-color: oklch(0.951 0.008 98.9);
}

Tailwind CSS v4

@theme {
  --color-salt: #f0efe9;
  --color-salt-50: #f5f5f3;
  --color-salt-100: #e8e8e5;
  --color-salt-200: #d5d4d0;
  --color-salt-300: #b8b7b3;
  --color-salt-400: #9f9e99;
  --color-salt-500: #878680;
  --color-salt-600: #72726d;
  --color-salt-700: #5c5b57;
  --color-salt-800: #43423f;
  --color-salt-900: #2e2e2c;
  --color-salt-950: #1b1b19;
}

SCSS

$salt: #f0efe9;
$salt-rgb: 240, 239, 233;
$salt-light: mix(#fff, $salt, 20%);
$salt-dark: mix(#000, $salt, 20%);

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