Phosphorescent Blue

CSS

:root {
  --phosphorescent-blue: #11eeee;
  --phosphorescent-blue-rgb: 17 238 238;
  --phosphorescent-blue-oklch: oklch(0.86 0.145 194.8);
}

.element {
  color: var(--phosphorescent-blue);
  background-color: hsl(180 87% 50%);
  border-color: oklch(0.86 0.145 194.8);
}

Tailwind CSS v4

@theme {
  --color-phosphorescent-blue: #11eeee;
  --color-phosphorescent-blue-50: #c5ffff;
  --color-phosphorescent-blue-100: #aef8f8;
  --color-phosphorescent-blue-200: #83e8e9;
  --color-phosphorescent-blue-300: #43ced1;
  --color-phosphorescent-blue-400: #00b8b9;
  --color-phosphorescent-blue-500: #00a2a3;
  --color-phosphorescent-blue-600: #00898a;
  --color-phosphorescent-blue-700: #006e6f;
  --color-phosphorescent-blue-800: #005150;
  --color-phosphorescent-blue-900: #003838;
  --color-phosphorescent-blue-950: #002322;
}

SCSS

$phosphorescent-blue: #11eeee;
$phosphorescent-blue-rgb: 17, 238, 238;
$phosphorescent-blue-light: mix(#fff, $phosphorescent-blue, 20%);
$phosphorescent-blue-dark: mix(#000, $phosphorescent-blue, 20%);

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