Blue Spell

CSS

:root {
  --blue-spell: #3b5c6c;
  --blue-spell-rgb: 59 92 108;
  --blue-spell-oklch: oklch(0.456 0.046 230);
}

.element {
  color: var(--blue-spell);
  background-color: hsl(200 29% 33%);
  border-color: oklch(0.456 0.046 230);
}

Tailwind CSS v4

@theme {
  --color-blue-spell: #3b5c6c;
  --color-blue-spell-50: #e9f8ff;
  --color-blue-spell-100: #d9ebf5;
  --color-blue-spell-200: #c1d8e5;
  --color-blue-spell-300: #a1bccb;
  --color-blue-spell-400: #83a4b5;
  --color-blue-spell-500: #668c9f;
  --color-blue-spell-600: #577787;
  --color-blue-spell-700: #455f6c;
  --color-blue-spell-800: #31464f;
  --color-blue-spell-900: #223037;
  --color-blue-spell-950: #111c22;
}

SCSS

$blue-spell: #3b5c6c;
$blue-spell-rgb: 59, 92, 108;
$blue-spell-light: mix(#fff, $blue-spell, 20%);
$blue-spell-dark: mix(#000, $blue-spell, 20%);

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