Crystal Yellow

CSS

:root {
  --crystal-yellow: #e4d99f;
  --crystal-yellow-rgb: 228 217 159;
  --crystal-yellow-oklch: oklch(0.88 0.076 98.7);
}

.element {
  color: var(--crystal-yellow);
  background-color: hsl(50 56% 76%);
  border-color: oklch(0.88 0.076 98.7);
}

Tailwind CSS v4

@theme {
  --color-crystal-yellow: #e4d99f;
  --color-crystal-yellow-50: #faf6de;
  --color-crystal-yellow-100: #ede9cc;
  --color-crystal-yellow-200: #dbd6b1;
  --color-crystal-yellow-300: #c0b98c;
  --color-crystal-yellow-400: #aa9f6b;
  --color-crystal-yellow-500: #938749;
  --color-crystal-yellow-600: #7c723f;
  --color-crystal-yellow-700: #635b32;
  --color-crystal-yellow-800: #4a4222;
  --color-crystal-yellow-900: #332e17;
  --color-crystal-yellow-950: #1f1b08;
}

SCSS

$crystal-yellow: #e4d99f;
$crystal-yellow-rgb: 228, 217, 159;
$crystal-yellow-light: mix(#fff, $crystal-yellow, 20%);
$crystal-yellow-dark: mix(#000, $crystal-yellow, 20%);

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