Unmellow Yellow

CSS

:root {
  --unmellow-yellow: #fefe66;
  --unmellow-yellow-rgb: 254 254 102;
  --unmellow-yellow-oklch: oklch(0.969 0.17 109.2);
}

.element {
  color: var(--unmellow-yellow);
  background-color: hsl(60 99% 70%);
  border-color: oklch(0.969 0.17 109.2);
}

Tailwind CSS v4

@theme {
  --color-unmellow-yellow: #fefe66;
  --color-unmellow-yellow-50: #f6fbc2;
  --color-unmellow-yellow-100: #e9eeac;
  --color-unmellow-yellow-200: #d7dc84;
  --color-unmellow-yellow-300: #bbbf4e;
  --color-unmellow-yellow-400: #a7a500;
  --color-unmellow-yellow-500: #918c00;
  --color-unmellow-yellow-600: #7a7700;
  --color-unmellow-yellow-700: #625f00;
  --color-unmellow-yellow-800: #4a4500;
  --color-unmellow-yellow-900: #333000;
  --color-unmellow-yellow-950: #1f1c00;
}

SCSS

$unmellow-yellow: #fefe66;
$unmellow-yellow-rgb: 254, 254, 102;
$unmellow-yellow-light: mix(#fff, $unmellow-yellow, 20%);
$unmellow-yellow-dark: mix(#000, $unmellow-yellow, 20%);

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