#074A5D

CSS

:root {
  --raging-thunderstorm: #074a5d;
  --raging-thunderstorm-rgb: 7 74 93;
  --raging-thunderstorm-oklch: oklch(0.381 0.068 223.4);
}

.element {
  color: var(--raging-thunderstorm);
  background-color: hsl(193 86% 20%);
  border-color: oklch(0.381 0.068 223.4);
}

Tailwind CSS v4

@theme {
  --color-raging-thunderstorm: #074a5d;
  --color-raging-thunderstorm-50: #e2faff;
  --color-raging-thunderstorm-100: #d1edf9;
  --color-raging-thunderstorm-200: #b6dbeb;
  --color-raging-thunderstorm-300: #92bfd2;
  --color-raging-thunderstorm-400: #71a8bc;
  --color-raging-thunderstorm-500: #4f90a7;
  --color-raging-thunderstorm-600: #447a8d;
  --color-raging-thunderstorm-700: #366271;
  --color-raging-thunderstorm-800: #254853;
  --color-raging-thunderstorm-900: #19323a;
  --color-raging-thunderstorm-950: #091e24;
}

SCSS

$raging-thunderstorm: #074a5d;
$raging-thunderstorm-rgb: 7, 74, 93;
$raging-thunderstorm-light: mix(#fff, $raging-thunderstorm, 20%);
$raging-thunderstorm-dark: mix(#000, $raging-thunderstorm, 20%);

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