Cold Light of Day

CSS

:root {
  --cold-light-of-day: #00eeee;
  --cold-light-of-day-rgb: 0 238 238;
  --cold-light-of-day-oklch: oklch(0.859 0.147 194.8);
}

.element {
  color: var(--cold-light-of-day);
  background-color: hsl(180 100% 47%);
  border-color: oklch(0.859 0.147 194.8);
}

Tailwind CSS v4

@theme {
  --color-cold-light-of-day: #00eeee;
  --color-cold-light-of-day-50: #c4ffff;
  --color-cold-light-of-day-100: #adf8f8;
  --color-cold-light-of-day-200: #82e8e9;
  --color-cold-light-of-day-300: #40ced1;
  --color-cold-light-of-day-400: #00b8b9;
  --color-cold-light-of-day-500: #00a2a4;
  --color-cold-light-of-day-600: #00898a;
  --color-cold-light-of-day-700: #006e6f;
  --color-cold-light-of-day-800: #005150;
  --color-cold-light-of-day-900: #003938;
  --color-cold-light-of-day-950: #002322;
}

SCSS

$cold-light-of-day: #00eeee;
$cold-light-of-day-rgb: 0, 238, 238;
$cold-light-of-day-light: mix(#fff, $cold-light-of-day, 20%);
$cold-light-of-day-dark: mix(#000, $cold-light-of-day, 20%);

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