#F3EBDA

CSS

:root {
  --platinum-blonde: #f3ebda;
  --platinum-blonde-rgb: 243 235 218;
  --platinum-blonde-oklch: oklch(0.942 0.024 85.8);
}

.element {
  color: var(--platinum-blonde);
  background-color: hsl(41 51% 90%);
  border-color: oklch(0.942 0.024 85.8);
}

Tailwind CSS v4

@theme {
  --color-platinum-blonde: #f3ebda;
  --color-platinum-blonde-50: #f8f5ed;
  --color-platinum-blonde-100: #ebe8df;
  --color-platinum-blonde-200: #d8d4c9;
  --color-platinum-blonde-300: #bcb7aa;
  --color-platinum-blonde-400: #a59e8f;
  --color-platinum-blonde-500: #8d8574;
  --color-platinum-blonde-600: #787163;
  --color-platinum-blonde-700: #605a4f;
  --color-platinum-blonde-800: #464239;
  --color-platinum-blonde-900: #312d27;
  --color-platinum-blonde-950: #1d1a15;
}

SCSS

$platinum-blonde: #f3ebda;
$platinum-blonde-rgb: 243, 235, 218;
$platinum-blonde-light: mix(#fff, $platinum-blonde, 20%);
$platinum-blonde-dark: mix(#000, $platinum-blonde, 20%);

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