#F5F9F4

CSS

:root {
  --white-porcelain: #f5f9f4;
  --white-porcelain-rgb: 245 249 244;
  --white-porcelain-oklch: oklch(0.978 0.008 139.4);
}

.element {
  color: var(--white-porcelain);
  background-color: hsl(108 29% 97%);
  border-color: oklch(0.978 0.008 139.4);
}

Tailwind CSS v4

@theme {
  --color-white-porcelain: #f5f9f4;
  --color-white-porcelain-50: #f4f6f4;
  --color-white-porcelain-100: #e6e8e6;
  --color-white-porcelain-200: #d2d5d2;
  --color-white-porcelain-300: #b5b8b5;
  --color-white-porcelain-400: #9ca09b;
  --color-white-porcelain-500: #838783;
  --color-white-porcelain-600: #6f736e;
  --color-white-porcelain-700: #595c58;
  --color-white-porcelain-800: #414340;
  --color-white-porcelain-900: #2d2e2c;
  --color-white-porcelain-950: #1a1b19;
}

SCSS

$white-porcelain: #f5f9f4;
$white-porcelain-rgb: 245, 249, 244;
$white-porcelain-light: mix(#fff, $white-porcelain, 20%);
$white-porcelain-dark: mix(#000, $white-porcelain, 20%);

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