Yellow Submarine

CSS

:root {
  --yellow-submarine: #ffff14;
  --yellow-submarine-rgb: 255 255 20;
  --yellow-submarine-oklch: oklch(0.968 0.209 109.7);
}

.element {
  color: var(--yellow-submarine);
  background-color: hsl(60 100% 54%);
  border-color: oklch(0.968 0.209 109.7);
}

Tailwind CSS v4

@theme {
  --color-yellow-submarine: #ffff14;
  --color-yellow-submarine-50: #f6fcb6;
  --color-yellow-submarine-100: #e9ef9d;
  --color-yellow-submarine-200: #d7dd6d;
  --color-yellow-submarine-300: #bbc11b;
  --color-yellow-submarine-400: #a9a600;
  --color-yellow-submarine-500: #938d00;
  --color-yellow-submarine-600: #7c7700;
  --color-yellow-submarine-700: #635f00;
  --color-yellow-submarine-800: #4b4500;
  --color-yellow-submarine-900: #343000;
  --color-yellow-submarine-950: #201c00;
}

SCSS

$yellow-submarine: #ffff14;
$yellow-submarine-rgb: 255, 255, 20;
$yellow-submarine-light: mix(#fff, $yellow-submarine, 20%);
$yellow-submarine-dark: mix(#000, $yellow-submarine, 20%);

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