Near-Black Shadow Canvas · 5% Luminance

Dark Screen Display Tool

Open a soft, low-luminance dark screen in fullscreen. Ideal for evaluating near-black gamma steps, reducing nighttime eye strain, and creating a soft ambient display.

Click to Launch Fullscreen TestPress F for Fullscreen • Space to Pause • R to Record
Active Mode:Pure Black (#000000)
#12

Near-Black Gamma

Reveals shadow crush, macro-blocking, and near-black posterization on WOLED and QD-OLED panels.

Eye Comfort & Rest

A gentle dark grey background that avoids the harsh pitch contrast of pure black against bright room lighting.

Shadow Step Matrix

Verify whether your display can distinguish step 1 (#010101) through step 16 (#101010) in low lighting.

Contrast 32-Step Matrix Test

Run our dedicated contrast calibration matrix to adjust your monitor's Black Level and Gamma settings.

Precision Color Matrix

Solid Color Palette & Custom Shade Generator

Select from standardized screen calibration shades or generate custom RGB/Kelvin values for panel analysis, photography backdrops, and ambient lighting.

Primary & Secondary Calibration

Grayscale & Shadow Steps

Color Temperature & Lighting Presets

Custom Shade & Kelvin Studio

Kelvin Temperature2700 K
1000K (Candle)6500K (Daylight)12000K (Blue Sky)
RGB:rgb(0, 0, 0)
HSL:hsl(0, 0%, 0%)
Real-Time Hardware Inspector

Live Display & Monitor Diagnostics

Accurate hardware data detected directly from your connected display, GPU pipeline, and browser window.

Screen Resolution
-- × --
Usable: -- × --
Pixel Ratio (DPR)
--
Standard Display
Color Depth & Gamut
24-bit
sRGB Gamut
Estimated Refresh Rate
60Hz / FPS
SDR Standard Range