Bug 182640

Summary:

Web Inspector: Color Picker returns wrong color in green channel on external monitor

Product:

WebKit

Reporter:

hskaugen

Component:

Web Inspector

Assignee:

Nobody <webkit-unassigned>

Status:

NEW ---

Severity:

Normal

CC:

inspector-bugzilla-changes

Priority:

Version:

WebKit Local Build

Hardware:

OS:

Windows 10

URL:

https://hoydedata.no/arcgis/rest/services/las_dom_somlos/ImageServer/legend

Attachments:

Description	Flags
HTML document where the bug appears.	none

Description hskaugen 2018-02-09 07:24:54 PST

Created attachment 333485 [details]
HTML document where the bug appears.

Steps to reproduce problem:

1. Open chrome on an external monitor. In my case, a HP 27er monitor.
2. Load the attached HTML code, or go to this url: https://hoydedata.no/arcgis/rest/services/las_dom_somlos/ImageServer/legend 
3. Click "Legend (GET)".
4. Inspect the first image, labeled "0", with the Color Picker tool.

What is the expected behavior?
The image should have the following color value: #aff0e9 or (175,240,233), as verified by GIMP 2 and Firefox Developer Edition.

What went wrong?
The Color Picker displays the following color value: #aff1e9 or (175,241,233). The color value in the green channel is off by one.

Comment 1 hskaugen 2018-02-10 03:30:18 PST

I was not able to reproduce the problem with another monitor, this time a Samsung branded monitor. In both cases, though, the monitor was connected to the HDMI output on my laptop.