#20577C

CSS

:root {
  --color-3am-in-shibuya: #20577c;
  --color-3am-in-shibuya-rgb: 32 87 124;
  --color-3am-in-shibuya-oklch: oklch(0.439 0.084 241.8);
}

.element {
  color: var(--color-3am-in-shibuya);
  background-color: hsl(204 59% 31%);
  border-color: oklch(0.439 0.084 241.8);
}

Tailwind CSS v4

@theme {
  --color-color-3am-in-shibuya: #20577c;
  --color-color-3am-in-shibuya-50: #e2f9ff;
  --color-color-3am-in-shibuya-100: #d1ecff;
  --color-color-3am-in-shibuya-200: #b7d9f6;
  --color-color-3am-in-shibuya-300: #93bde0;
  --color-color-3am-in-shibuya-400: #71a5cc;
  --color-color-3am-in-shibuya-500: #508db9;
  --color-color-3am-in-shibuya-600: #45779c;
  --color-color-3am-in-shibuya-700: #375f7d;
  --color-color-3am-in-shibuya-800: #25465c;
  --color-color-3am-in-shibuya-900: #193141;
  --color-color-3am-in-shibuya-950: #091d29;
}

SCSS

$color-3am-in-shibuya: #20577c;
$color-3am-in-shibuya-rgb: 32, 87, 124;
$color-3am-in-shibuya-light: mix(#fff, $color-3am-in-shibuya, 20%);
$color-3am-in-shibuya-dark: mix(#000, $color-3am-in-shibuya, 20%);

.element {
  color: $color-3am-in-shibuya;
  box-shadow: 0 0 0 2px rgba($color-3am-in-shibuya, 0.35);
}