#F9F9D8

CSS

:root {
  --good-morning: #f9f9d8;
  --good-morning-rgb: 249 249 216;
  --good-morning-oklch: oklch(0.974 0.043 107.2);
}

.element {
  color: var(--good-morning);
  background-color: hsl(60 73% 91%);
  border-color: oklch(0.974 0.043 107.2);
}

Tailwind CSS v4

@theme {
  --color-good-morning: #f9f9d8;
  --color-good-morning-50: #f6f6e9;
  --color-good-morning-100: #e9e9d9;
  --color-good-morning-200: #d5d6c1;
  --color-good-morning-300: #b9baa1;
  --color-good-morning-400: #a1a184;
  --color-good-morning-500: #898968;
  --color-good-morning-600: #747458;
  --color-good-morning-700: #5d5c46;
  --color-good-morning-800: #444332;
  --color-good-morning-900: #2f2f22;
  --color-good-morning-950: #1c1b11;
}

SCSS

$good-morning: #f9f9d8;
$good-morning-rgb: 249, 249, 216;
$good-morning-light: mix(#fff, $good-morning, 20%);
$good-morning-dark: mix(#000, $good-morning, 20%);

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