Rainstorm

CSS

:root {
  --rainstorm: #244653;
  --rainstorm-rgb: 36 70 83;
  --rainstorm-oklch: oklch(0.374 0.045 225);
}

.element {
  color: var(--rainstorm);
  background-color: hsl(197 39% 23%);
  border-color: oklch(0.374 0.045 225);
}

Tailwind CSS v4

@theme {
  --color-rainstorm: #244653;
  --color-rainstorm-50: #e8f8ff;
  --color-rainstorm-100: #d9ebf4;
  --color-rainstorm-200: #c1d9e3;
  --color-rainstorm-300: #a0bdca;
  --color-rainstorm-400: #82a5b3;
  --color-rainstorm-500: #658d9d;
  --color-rainstorm-600: #567785;
  --color-rainstorm-700: #455f6a;
  --color-rainstorm-800: #31464e;
  --color-rainstorm-900: #213036;
  --color-rainstorm-950: #101d21;
}

SCSS

$rainstorm: #244653;
$rainstorm-rgb: 36, 70, 83;
$rainstorm-light: mix(#fff, $rainstorm, 20%);
$rainstorm-dark: mix(#000, $rainstorm, 20%);

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