Fluorescent Turquoise

CSS

:root {
  --fluorescent-turquoise: #00fdff;
  --fluorescent-turquoise-rgb: 0 253 255;
  --fluorescent-turquoise-oklch: oklch(0.901 0.154 195.8);
}

.element {
  color: var(--fluorescent-turquoise);
  background-color: hsl(180 100% 50%);
  border-color: oklch(0.901 0.154 195.8);
}

Tailwind CSS v4

@theme {
  --color-fluorescent-turquoise: #00fdff;
  --color-fluorescent-turquoise-50: #c2ffff;
  --color-fluorescent-turquoise-100: #aaf8fa;
  --color-fluorescent-turquoise-200: #7de9ec;
  --color-fluorescent-turquoise-300: #33cfd3;
  --color-fluorescent-turquoise-400: #00b9bc;
  --color-fluorescent-turquoise-500: #00a3a7;
  --color-fluorescent-turquoise-600: #008a8d;
  --color-fluorescent-turquoise-700: #006e71;
  --color-fluorescent-turquoise-800: #005252;
  --color-fluorescent-turquoise-900: #003939;
  --color-fluorescent-turquoise-950: #002323;
}

SCSS

$fluorescent-turquoise: #00fdff;
$fluorescent-turquoise-rgb: 0, 253, 255;
$fluorescent-turquoise-light: mix(#fff, $fluorescent-turquoise, 20%);
$fluorescent-turquoise-dark: mix(#000, $fluorescent-turquoise, 20%);

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