#67A1CA

CSS

:root {
  --sub-zero: #67a1ca;
  --sub-zero-rgb: 103 161 202;
  --sub-zero-oklch: oklch(0.685 0.086 240.5);
}

.element {
  color: var(--sub-zero);
  background-color: hsl(205 48% 60%);
  border-color: oklch(0.685 0.086 240.5);
}

Tailwind CSS v4

@theme {
  --color-sub-zero: #67a1ca;
  --color-sub-zero-50: #e1f9ff;
  --color-sub-zero-100: #d0ecff;
  --color-sub-zero-200: #b5d9f7;
  --color-sub-zero-300: #91bde0;
  --color-sub-zero-400: #6fa5cc;
  --color-sub-zero-500: #4d8dba;
  --color-sub-zero-600: #42789d;
  --color-sub-zero-700: #34607e;
  --color-sub-zero-800: #23465d;
  --color-sub-zero-900: #183141;
  --color-sub-zero-950: #081d2a;
}

SCSS

$sub-zero: #67a1ca;
$sub-zero-rgb: 103, 161, 202;
$sub-zero-light: mix(#fff, $sub-zero, 20%);
$sub-zero-dark: mix(#000, $sub-zero, 20%);

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