Bright Yellow Green

CSS

:root {
  --bright-yellow-green: #9dff00;
  --bright-yellow-green-rgb: 157 255 0;
  --bright-yellow-green-oklch: oklch(0.904 0.251 132);
}

.element {
  color: var(--bright-yellow-green);
  background-color: hsl(83 100% 50%);
  border-color: oklch(0.904 0.251 132);
}

Tailwind CSS v4

@theme {
  --color-bright-yellow-green: #9dff00;
  --color-bright-yellow-green-50: #d8ffbc;
  --color-bright-yellow-green-100: #c5fba4;
  --color-bright-yellow-green-200: #a7eb78;
  --color-bright-yellow-green-300: #7ed136;
  --color-bright-yellow-green-400: #61b900;
  --color-bright-yellow-green-500: #39a200;
  --color-bright-yellow-green-600: #328900;
  --color-bright-yellow-green-700: #286e00;
  --color-bright-yellow-green-800: #225000;
  --color-bright-yellow-green-900: #163800;
  --color-bright-yellow-green-950: #072200;
}

SCSS

$bright-yellow-green: #9dff00;
$bright-yellow-green-rgb: 157, 255, 0;
$bright-yellow-green-light: mix(#fff, $bright-yellow-green, 20%);
$bright-yellow-green-dark: mix(#000, $bright-yellow-green, 20%);

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