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Monitor color
calibration.

See whether your display is showing a neutral white, believable color, and natural skin before you reach for a colorimeter.

Start calibration

My Screen Tester turns the browser into a clean visual reference. Use the fields at your normal viewing distance, keep the room consistent, and treat the result as a practical check—not a laboratory measurement.

4
white points
24
color patches
8
skin references

Color calibration.

Compare neutral whites, reference colors, and skin tones on the display you are using now.

White Balance selected. Compare your display with the D65 field.

White balance

Your display white should look closest to D65. Warm means the color temperature is low; cool means it is high.

D50 (5000K)Print · Warm yellow
D55 (5500K)Daylight · Slightly warm
D65 (6500K)sRGB standard · Neutral white
D75 (7500K)Overcast · Slightly cool blue
Your display whiteCompare with the D65 reference above
White BalanceD65 / 6500K reference
White BalanceD65 / 6500K reference
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This is a visual browser reference, not a sensor measurement. It can reveal obvious color shifts, but precise ΔE values and ICC profiles require a hardware colorimeter.

A clearer color check.

Three visual references answer the questions that matter first: is white neutral, do familiar colors look right, and does skin carry an unwanted tint?

01 / WHITE

White balance

Compare D50, D55, D65, and D75 fields. A warm or cool cast affects every other color on the screen, so white is the most useful place to establish a baseline.

02 / COLOR

Reference card

Twenty-four patches move from natural and portrait colors through saturated hues to neutral greys. Use the grey end to spot a subtle red, green, or blue bias.

03 / SKIN

Skin tone

People notice skin shifts quickly. Compare the range of tones, then use the bias fields to decide whether the display leans green, neutral, or magenta.

What calibration means.

Color accuracy is a chain: the display emits a color, the operating system manages it, and your eyes judge it under a particular light.

MEASURE

Color accuracy · ΔE

Delta E expresses the distance between a target color and the color a display produces. Lower is closer. The ranges in the tool are reference language, not a value measured from your panel.

SET

White point · CCT

Color temperature describes whether white feels warm or cool. D65 at 6500K is the usual sRGB reference; a changed white point gives every hue a systematic cast.

MANAGE

ICC profile

An ICC or ICM profile records a display's gamut, white point, and tone response so color-managed software can translate standard colors more consistently.

Three levels of adjustment.

Start with the least complicated change that answers the problem. A visual check is useful for direction; a sensor is needed for precision.

01

Visual assessment

Use the white, color-card, and skin references to identify a large shift. Ask whether neutral fields look neutral and whether familiar hues feel believable.

Free · directionalA useful health check before changing settings.
02

OSD adjustment

Choose sRGB or Standard mode when available, set the white point near 6500K, and adjust RGB gain until white loses its visible cast. Keep gamma near the display's intended 2.2 target.

Monitor menu · basicRecord the original values before making changes.
03

Hardware calibration

A colorimeter measures the panel and calibration software builds an ICC profile. This is the appropriate path for color-critical work and repeatable ΔE targets.

Sensor · preciseRequired when visual consistency is not enough.

Know the panel.

Factory accuracy and viewing behavior differ by panel type. The reference fields help you see a problem; the panel explains why it may appear.

IPS / PRO

Professional IPS

Often ships with a calibration report and wide-gamut controls. A supported hardware LUT can make a measured profile repeatable.

Strong baseline · wide gamut
IPS / EVERYDAY

Consumer IPS

Usually offers a good starting point, especially in sRGB mode. Software adjustment can remove a visible cast, but brightness may remain a compromise.

Good value · check the preset
VA

VA panel

Viewing-angle shifts and dark gamma behavior can make side areas and shadow tones look different from the center of the panel.

Check from your normal position
OLED

OLED

Can be very accurate, while automatic brightness limiting and low-grey behavior may change how large bright or shadow fields appear.

Watch brightness behavior

Keep the result
consistent.

Load the right profile

After hardware calibration, confirm the operating system and color-managed apps are using the intended ICC profile. Driver updates and OS reinstalls can reset it.

Start with sRGB

Without a colorimeter, an sRGB preset is often a safer baseline than a vivid wide-gamut mode. It may reduce saturation and lock brightness, but it follows a known target.

Control the room

Ambient light changes color perception. Keep the light source neutral and repeatable, avoid direct reflections, and do not judge a display in a room that changes color every few minutes.

Recheck over time

Backlights age and OLED pixels change. General use can be checked every few months; color-critical work benefits from a regular calibration schedule.

Before you
compare.

A small amount of preparation makes a visual test more trustworthy. Keep the display, room, and observer as consistent as possible.

  • 01Warm up first. Give the panel at least 30 minutes after power-on so brightness and color temperature can settle.
  • 02Use normal light. Avoid colored light and direct reflections; reserve a darker room for backlight-bleed checks.
  • 03Compare displays. Open the same reference on another screen if you have one. Differences become easier to separate from adaptation.
  • 04Save your settings. Photograph the OSD values before adjustment so you can restore a known starting point.

Questions worth asking.

The browser can show a clear visual difference. It cannot know the physical color output of the panel without a measurement device.

How accurate can I get without a colorimeter?

You can usually get directionally correct by selecting sRGB or 6500K and removing an obvious tint. Human vision adapts to surrounding light, so a visual test is not a reliable substitute for a measured profile or a precise ΔE target.

Why do colors look washed out in sRGB mode?

sRGB mode limits a wide-gamut display to the sRGB range. Saturated colors may look less vivid than in a native wide-gamut mode, but that extra vividness can be outside the color standard rather than more accurate.

How do macOS and Windows handle profiles?

macOS applies display profiles broadly across the system. Windows support depends more on the application; color-managed tools are more consistent than software that sends raw RGB values.

Does night mode affect calibration?

Yes. Night Light, Night Shift, True Tone, and similar comfort features deliberately move the white point warmer. Disable them before comparing white balance or doing color-critical work.

Why do print and screen colors not match?

A display emits light in RGB while paper reflects light through ink in CMYK. Calibrate the display, use the printer and paper ICC profiles, and use soft proofing in color-managed software for a closer match.

Can this tool create an ICC profile?

No. My Screen Tester provides visual reference fields and guidance only. Creating a useful ICC profile requires a colorimeter or spectrophotometer and calibration software.

Make color
easier to trust.

Start with the white balance reference, move through the color card, and return to the screen after every adjustment.

Run the color check