#DEFFFD

CSS

:root {
  --cold-canada: #defffd;
  --cold-canada-rgb: 222 255 253;
  --cold-canada-oklch: oklch(0.976 0.034 192.1);
}

.element {
  color: var(--cold-canada);
  background-color: hsl(176 100% 94%);
  border-color: oklch(0.976 0.034 192.1);
}

Tailwind CSS v4

@theme {
  --color-cold-canada: #defffd;
  --color-cold-canada-50: #ebf8f8;
  --color-cold-canada-100: #dceceb;
  --color-cold-canada-200: #c4d9d8;
  --color-cold-canada-300: #a4bdbc;
  --color-cold-canada-400: #88a5a4;
  --color-cold-canada-500: #6c8e8c;
  --color-cold-canada-600: #5c7876;
  --color-cold-canada-700: #49605f;
  --color-cold-canada-800: #354645;
  --color-cold-canada-900: #243130;
  --color-cold-canada-950: #131d1c;
}

SCSS

$cold-canada: #defffd;
$cold-canada-rgb: 222, 255, 253;
$cold-canada-light: mix(#fff, $cold-canada, 20%);
$cold-canada-dark: mix(#000, $cold-canada, 20%);

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