Color Accuracy Test — 12 Patches + ΔE Reading

Compare with reference HEX; grays stay neutral; ramps stay smooth
Features

Professional Accuracy Inspection

A professional color accuracy test: 12 sRGB reference patches fullscreen, gray neutrality and saturation ramps — assess your display’s accuracy visually, no instrument required.

12 Reference Patches

sRGB colors spanning the hue wheel with reference HEX labels for fullscreen scrutiny.

Gray Neutrality

Eight gray steps side by side — any RGB gain imbalance shows as tinted grays.

Saturation Ramps

25-100% ramps expose hue drift — if colors shift as they deepen, that is drift.

Concepts

How Accuracy Is Measured

ΔE (Delta E)

The Metric

Perceived distance between shown and reference color. <1 invisible, 1-2 excellent, 2-3.5 good, 3.5-5 visible, >5 severe.

Gray Balance

Gray Balance

How well R=G=B holds across grays — the foundation of accuracy. If grays are off, colors cannot be right.

Gamut ≠ Accuracy

Wide ≠ Accurate

A wide-gamut panel without color management oversaturates sRGB content. Gamut is how many colors; accuracy is how right they are.

How to

Three Steps to Assess Accuracy

01

Compare References

Fullscreen each of the 12 patches and compare with your calibrated reference or known standard.

02

Check Gray Balance

In gray mode, any red/green/blue tint means RGB gains need calibration.

03

Watch the Ramps

All four ramps should deepen evenly with no banding and no hue shift.

Compare

Reading ΔE

ΔE < 1

Invisible
  • · Instrument-grade
  • · Flagship factory cal
  • · Print-proof ready
  • · No action needed

ΔE 1-2

Excellent
  • · Pro design ready
  • · Safe for retouching
  • · Recalibrate regularly
  • · Typical post-cal result

ΔE 2-3.5

Good
  • · Invisible in daily use
  • · OK for hobby work
  • · Typical mid-range
  • · Calibration helps

ΔE > 5

Severe
  • · Visible color cast
  • · Entry TN / budget
  • · Not for design
  • · Calibrate first
Tips

Pro Tips

Start from sRGB Mode

Assess accuracy in sRGB mode or factory reset — game/cinema presets oversaturate by design.

Read the Factory Report

Mid/high-end monitors ship per-unit calibration reports — prefer models averaging ΔE<2.

Software Quick Fix

GPU RGB gain sliders help in a pinch, but true precision needs a colorimeter + DisplayCAL.

Clamp Wide Gamuts

On QD wide-gamut screens, always enable sRGB clamp for sRGB content to avoid oversaturation.

FAQ

FAQ

Recommended Test Environment

  • Neutral 6500K ambient light
  • Brightness ~120 nits
  • Warm up 30 minutes first
  • Disable night mode / filters
  • Use the sRGB picture mode
  • Avoid colorful walls/clothes reflecting
Related

Related Tools

Device Guides

This test is Step 4 of the Test Wizard — run all 8 checks and export a report.
Wizard · Step 4 / 8 — Color Accuracy
Open Test Wizard