#99D3E2

CSS

:root {
  --infinity-pool: #99d3e2;
  --infinity-pool-rgb: 153 211 226;
  --infinity-pool-oklch: oklch(0.832 0.063 215.5);
}

.element {
  color: var(--infinity-pool);
  background-color: hsl(192 56% 74%);
  border-color: oklch(0.832 0.063 215.5);
}

Tailwind CSS v4

@theme {
  --color-infinity-pool: #99d3e2;
  --color-infinity-pool-50: #e2faff;
  --color-infinity-pool-100: #d2eef6;
  --color-infinity-pool-200: #b7dbe6;
  --color-infinity-pool-300: #94c0cd;
  --color-infinity-pool-400: #73a8b6;
  --color-infinity-pool-500: #5291a1;
  --color-infinity-pool-600: #467b88;
  --color-infinity-pool-700: #38626d;
  --color-infinity-pool-800: #274850;
  --color-infinity-pool-900: #1a3237;
  --color-infinity-pool-950: #0a1e22;
}

SCSS

$infinity-pool: #99d3e2;
$infinity-pool-rgb: 153, 211, 226;
$infinity-pool-light: mix(#fff, $infinity-pool, 20%);
$infinity-pool-dark: mix(#000, $infinity-pool, 20%);

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