#E8E4D9

CSS

:root {
  --helium: #e8e4d9;
  --helium-rgb: 232 228 217;
  --helium-oklch: oklch(0.919 0.015 90.2);
}

.element {
  color: var(--helium);
  background-color: hsl(44 25% 88%);
  border-color: oklch(0.919 0.015 90.2);
}

Tailwind CSS v4

@theme {
  --color-helium: #e8e4d9;
  --color-helium-50: #f7f5f0;
  --color-helium-100: #e9e8e2;
  --color-helium-200: #d6d4cd;
  --color-helium-300: #bab7af;
  --color-helium-400: #a29e94;
  --color-helium-500: #8a867b;
  --color-helium-600: #757168;
  --color-helium-700: #5d5b53;
  --color-helium-800: #44423c;
  --color-helium-900: #2f2e2a;
  --color-helium-950: #1c1a17;
}

SCSS

$helium: #e8e4d9;
$helium-rgb: 232, 228, 217;
$helium-light: mix(#fff, $helium, 20%);
$helium-dark: mix(#000, $helium, 20%);

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