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CSS Deep Dive

Extract CSS Box Shadows From Any Website

January 25, 20267 min read

Shadows create depth, hierarchy, and visual polish. The best design systems use consistent elevation scales—not random shadow values. Here's how to extract and analyze shadow systems from any website.

Why Shadows Matter

  • 📊
    Visual Hierarchy — Shadows indicate elevation and importance
  • 🎯
    Focus States — Shadows enhance interactive feedback
  • ✨
    Premium Feel — Subtle shadows make UIs feel polished

Anatomy of a Box Shadow

box-shadow: 
  0px      /* x-offset */
  4px      /* y-offset */
  6px      /* blur radius */
  -1px     /* spread radius */
  rgba(0, 0, 0, 0.1);  /* color */

/* Multiple shadows for depth */
box-shadow: 
  0 1px 3px rgba(0,0,0,0.12),
  0 1px 2px rgba(0,0,0,0.24);

What BrandSpy Extracts

All box-shadow values
Text-shadow values
Shadow colors
Elevation patterns
Multi-layer shadows
Tailwind shadow export

Sample Shadow Extraction

Shadows Extracted: linear.app
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Elevation Scale:
├─ sm:  0 1px 2px rgba(0,0,0,0.05)
├─ md:  0 4px 6px rgba(0,0,0,0.1)
├─ lg:  0 10px 15px rgba(0,0,0,0.1)
├─ xl:  0 20px 25px rgba(0,0,0,0.15)
└─ 2xl: 0 25px 50px rgba(0,0,0,0.25)

Tailwind Export:
boxShadow: {
  'sm': '0 1px 2px rgba(0,0,0,0.05)',
  'md': '0 4px 6px rgba(0,0,0,0.1)',
  'lg': '0 10px 15px rgba(0,0,0,0.1)',
}

Related Guides

Extract Shadow Systems in Seconds

Get complete shadow elevation scales from any website. Export directly to Tailwind.

Try Design Analyzer →

Advanced 2026 Analysis 🚀

Beyond basic extraction, BrandSpy now features an advanced mathematical heuristic engine:

  • • APCA Contrast: Checks colors against the new WCAG 3.0 advanced perceptual contrast algorithm.
  • • Color Blindness Simulation: Verifies palettes against Protanopia and Deuteranopia matrices.
  • • Typography Scales: Mathematically detects geometric growth ratios (e.g., Major Third, Golden Ratio).
  • • Grid Compliance: Calculates the percentage of margins/paddings that obey strict 8-point grid rules.

You can analyze any website for free to see the math behind the design.