Peek-a-Blue

CSS

:root {
  --peek-a-blue: #c5e1e1;
  --peek-a-blue-rgb: 197 225 225;
  --peek-a-blue-oklch: oklch(0.889 0.03 196.6);
}

.element {
  color: var(--peek-a-blue);
  background-color: hsl(180 32% 83%);
  border-color: oklch(0.889 0.03 196.6);
}

Tailwind CSS v4

@theme {
  --color-peek-a-blue: #c5e1e1;
  --color-peek-a-blue-50: #ecf8f8;
  --color-peek-a-blue-100: #ddebeb;
  --color-peek-a-blue-200: #c6d8d9;
  --color-peek-a-blue-300: #a7bcbd;
  --color-peek-a-blue-400: #8ba4a4;
  --color-peek-a-blue-500: #708d8d;
  --color-peek-a-blue-600: #5f7777;
  --color-peek-a-blue-700: #4c5f5f;
  --color-peek-a-blue-800: #374645;
  --color-peek-a-blue-900: #253030;
  --color-peek-a-blue-950: #141c1c;
}

SCSS

$peek-a-blue: #c5e1e1;
$peek-a-blue-rgb: 197, 225, 225;
$peek-a-blue-light: mix(#fff, $peek-a-blue, 20%);
$peek-a-blue-dark: mix(#000, $peek-a-blue, 20%);

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