#FAFAE9

CSS

:root {
  --placebo-yellow: #fafae9;
  --placebo-yellow-rgb: 250 250 233;
  --placebo-yellow-oklch: oklch(0.981 0.022 106.8);
}

.element {
  color: var(--placebo-yellow);
  background-color: hsl(60 63% 95%);
  border-color: oklch(0.981 0.022 106.8);
}

Tailwind CSS v4

@theme {
  --color-placebo-yellow: #fafae9;
  --color-placebo-yellow-50: #f5f6ef;
  --color-placebo-yellow-100: #e8e9e0;
  --color-placebo-yellow-200: #d5d5ca;
  --color-placebo-yellow-300: #b8b8ac;
  --color-placebo-yellow-400: #a0a091;
  --color-placebo-yellow-500: #888777;
  --color-placebo-yellow-600: #737365;
  --color-placebo-yellow-700: #5c5c50;
  --color-placebo-yellow-800: #43433a;
  --color-placebo-yellow-900: #2e2e28;
  --color-placebo-yellow-950: #1b1b16;
}

SCSS

$placebo-yellow: #fafae9;
$placebo-yellow-rgb: 250, 250, 233;
$placebo-yellow-light: mix(#fff, $placebo-yellow, 20%);
$placebo-yellow-dark: mix(#000, $placebo-yellow, 20%);

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