Petro Blue

CSS

:root {
  --petro-blue: #2f5961;
  --petro-blue-rgb: 47 89 97;
  --petro-blue-oklch: oklch(0.437 0.049 211.3);
}

.element {
  color: var(--petro-blue);
  background-color: hsl(190 35% 28%);
  border-color: oklch(0.437 0.049 211.3);
}

Tailwind CSS v4

@theme {
  --color-petro-blue: #2f5961;
  --color-petro-blue-50: #e6f9fe;
  --color-petro-blue-100: #d6edf2;
  --color-petro-blue-200: #bedae1;
  --color-petro-blue-300: #9cbec6;
  --color-petro-blue-400: #7da7af;
  --color-petro-blue-500: #5f8f99;
  --color-petro-blue-600: #517981;
  --color-petro-blue-700: #416167;
  --color-petro-blue-800: #2e474b;
  --color-petro-blue-900: #1f3134;
  --color-petro-blue-950: #0f1d20;
}

SCSS

$petro-blue: #2f5961;
$petro-blue-rgb: 47, 89, 97;
$petro-blue-light: mix(#fff, $petro-blue, 20%);
$petro-blue-dark: mix(#000, $petro-blue, 20%);

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