#AFC1F4

CSS

:root {
  --sky-high: #afc1f4;
  --sky-high-rgb: 175 193 244;
  --sky-high-oklch: oklch(0.815 0.075 269.6);
}

.element {
  color: var(--sky-high);
  background-color: hsl(224 76% 82%);
  border-color: oklch(0.815 0.075 269.6);
}

Tailwind CSS v4

@theme {
  --color-sky-high: #afc1f4;
  --color-sky-high-50: #edf5ff;
  --color-sky-high-100: #dfe7ff;
  --color-sky-high-200: #c8d3f5;
  --color-sky-high-300: #a9b6df;
  --color-sky-high-400: #8d9dcc;
  --color-sky-high-500: #7284b8;
  --color-sky-high-600: #61709c;
  --color-sky-high-700: #4d597d;
  --color-sky-high-800: #37425d;
  --color-sky-high-900: #252d41;
  --color-sky-high-950: #141a2a;
}

SCSS

$sky-high: #afc1f4;
$sky-high-rgb: 175, 193, 244;
$sky-high-light: mix(#fff, $sky-high, 20%);
$sky-high-dark: mix(#000, $sky-high, 20%);

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