#50A3CF

CSS

:root {
  --sub-zero: #50a3cf;
  --sub-zero-rgb: 80 163 207;
  --sub-zero-oklch: oklch(0.682 0.103 234.3);
}

.element {
  color: var(--sub-zero);
  background-color: hsl(201 57% 56%);
  border-color: oklch(0.682 0.103 234.3);
}

Tailwind CSS v4

@theme {
  --color-sub-zero: #50a3cf;
  --color-sub-zero-50: #dafbff;
  --color-sub-zero-100: #c8eeff;
  --color-sub-zero-200: #aadcfb;
  --color-sub-zero-300: #83c0e6;
  --color-sub-zero-400: #5ba8d2;
  --color-sub-zero-500: #2e90c0;
  --color-sub-zero-600: #297aa2;
  --color-sub-zero-700: #216282;
  --color-sub-zero-800: #134860;
  --color-sub-zero-900: #0c3243;
  --color-sub-zero-950: #011e2b;
}

SCSS

$sub-zero: #50a3cf;
$sub-zero-rgb: 80, 163, 207;
$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);
}