Biro Blue

CSS

:root {
  --biro-blue: #2f3946;
  --biro-blue-rgb: 47 57 70;
  --biro-blue-oklch: oklch(0.341 0.027 255.1);
}

.element {
  color: var(--biro-blue);
  background-color: hsl(214 20% 23%);
  border-color: oklch(0.341 0.027 255.1);
}

Tailwind CSS v4

@theme {
  --color-biro-blue: #2f3946;
  --color-biro-blue-50: #f0f6fd;
  --color-biro-blue-100: #e2e8f1;
  --color-biro-blue-200: #cdd5e0;
  --color-biro-blue-300: #afb8c5;
  --color-biro-blue-400: #94a0ae;
  --color-biro-blue-500: #7b8798;
  --color-biro-blue-600: #687381;
  --color-biro-blue-700: #535c67;
  --color-biro-blue-800: #3c434c;
  --color-biro-blue-900: #292e34;
  --color-biro-blue-950: #171b20;
}

SCSS

$biro-blue: #2f3946;
$biro-blue-rgb: 47, 57, 70;
$biro-blue-light: mix(#fff, $biro-blue, 20%);
$biro-blue-dark: mix(#000, $biro-blue, 20%);

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