Opera Blue

CSS

:root {
  --opera-blue: #453e6e;
  --opera-blue-rgb: 69 62 110;
  --opera-blue-oklch: oklch(0.394 0.08 288.9);
}

.element {
  color: var(--opera-blue);
  background-color: hsl(249 28% 34%);
  border-color: oklch(0.394 0.08 288.9);
}

Tailwind CSS v4

@theme {
  --color-opera-blue: #453e6e;
  --color-opera-blue-50: #f5f2ff;
  --color-opera-blue-100: #e7e4ff;
  --color-opera-blue-200: #d4cff5;
  --color-opera-blue-300: #b7b1de;
  --color-opera-blue-400: #9c97cb;
  --color-opera-blue-500: #847db8;
  --color-opera-blue-600: #706a9b;
  --color-opera-blue-700: #59557d;
  --color-opera-blue-800: #403e5d;
  --color-opera-blue-900: #2c2b41;
  --color-opera-blue-950: #19182a;
}

SCSS

$opera-blue: #453e6e;
$opera-blue-rgb: 69, 62, 110;
$opera-blue-light: mix(#fff, $opera-blue, 20%);
$opera-blue-dark: mix(#000, $opera-blue, 20%);

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