#B5E1DE

CSS

:root {
  --catch-the-wave: #b5e1de;
  --catch-the-wave-rgb: 181 225 222;
  --catch-the-wave-oklch: oklch(0.878 0.046 191.2);
}

.element {
  color: var(--catch-the-wave);
  background-color: hsl(176 42% 80%);
  border-color: oklch(0.878 0.046 191.2);
}

Tailwind CSS v4

@theme {
  --color-catch-the-wave: #b5e1de;
  --color-catch-the-wave-50: #e7faf9;
  --color-catch-the-wave-100: #d7edec;
  --color-catch-the-wave-200: #bfdbda;
  --color-catch-the-wave-300: #9dbfbe;
  --color-catch-the-wave-400: #7fa8a5;
  --color-catch-the-wave-500: #62908d;
  --color-catch-the-wave-600: #537a78;
  --color-catch-the-wave-700: #426260;
  --color-catch-the-wave-800: #304846;
  --color-catch-the-wave-900: #203230;
  --color-catch-the-wave-950: #101e1c;
}

SCSS

$catch-the-wave: #b5e1de;
$catch-the-wave-rgb: 181, 225, 222;
$catch-the-wave-light: mix(#fff, $catch-the-wave, 20%);
$catch-the-wave-dark: mix(#000, $catch-the-wave, 20%);

.element {
  color: $catch-the-wave;
  box-shadow: 0 0 0 2px rgba($catch-the-wave, 0.35);
}