Perfectly Blue

CSS

:root {
  --perfectly-blue: #97d0e5;
  --perfectly-blue-rgb: 151 208 229;
  --perfectly-blue-oklch: oklch(0.826 0.065 222.8);
}

.element {
  color: var(--perfectly-blue);
  background-color: hsl(196 60% 75%);
  border-color: oklch(0.826 0.065 222.8);
}

Tailwind CSS v4

@theme {
  --color-perfectly-blue: #97d0e5;
  --color-perfectly-blue-50: #e2faff;
  --color-perfectly-blue-100: #d2edf9;
  --color-perfectly-blue-200: #b7dbea;
  --color-perfectly-blue-300: #94bfd1;
  --color-perfectly-blue-400: #73a7bb;
  --color-perfectly-blue-500: #5290a6;
  --color-perfectly-blue-600: #467a8c;
  --color-perfectly-blue-700: #386270;
  --color-perfectly-blue-800: #274852;
  --color-perfectly-blue-900: #1a3239;
  --color-perfectly-blue-950: #0a1e24;
}

SCSS

$perfectly-blue: #97d0e5;
$perfectly-blue-rgb: 151, 208, 229;
$perfectly-blue-light: mix(#fff, $perfectly-blue, 20%);
$perfectly-blue-dark: mix(#000, $perfectly-blue, 20%);

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