#A7CAFF

CSS

:root {
  --night-snow: #a7caff;
  --night-snow-rgb: 167 202 255;
  --night-snow-oklch: oklch(0.832 0.084 258.5);
}

.element {
  color: var(--night-snow);
  background-color: hsl(216 100% 83%);
  border-color: oklch(0.832 0.084 258.5);
}

Tailwind CSS v4

@theme {
  --color-night-snow: #a7caff;
  --color-night-snow-50: #e8f6ff;
  --color-night-snow-100: #d8e9ff;
  --color-night-snow-200: #c0d5f9;
  --color-night-snow-300: #9fb9e3;
  --color-night-snow-400: #80a0d0;
  --color-night-snow-500: #6387be;
  --color-night-snow-600: #5573a0;
  --color-night-snow-700: #435c80;
  --color-night-snow-800: #2f435f;
  --color-night-snow-900: #202f43;
  --color-night-snow-950: #0f1b2b;
}

SCSS

$night-snow: #a7caff;
$night-snow-rgb: 167, 202, 255;
$night-snow-light: mix(#fff, $night-snow, 20%);
$night-snow-dark: mix(#000, $night-snow, 20%);

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