Screen filter for colorblind

Question

Is there a software that could help the colorblind by either filtering certain colors from the (computer) screen or modifying them in such a way as to make them more visible or distinguishable?

I found this related tool which is amazing: Visolve (more such tools: 15-tools-color-blindness), but it requires you to capture a certain part of your screen and go through the options.

Is there a tool that lets you do this for the entire screen at the simple click of a button (main requirement)?

As for what color filter it actually applies, either one of them is fine (red/blue/green filter) as long as it assists in the distinguishing the colors better.

Should work on Windows 8.

Answer 1

Visolve Toolbar claims:

Visolve is the software that transforms colors of the computer display into the discriminable colors for various people including people with color vision deficiency, commonly called color blindness. In addition to distinguishing colors and finding a specific color, it aims to help people with color blindness:

- to guess a normal color, and
- to feel the color gradations in natural scenery etc. by their visual information.

Visolve can execute the following three types of color transformation, filtering, and hatching:

Red-Green transform -- transforms redder colors to brighter, and greener colors to darker,
Blue-Yellow transform -- transforms bluer colors to brighter, and yellower colors to darker,
Saturation increase -- increases the saturation of all colors,
Filtering -- darkens all colors other than the specified color, and
Hatching -- draws different hatch patterns depending on color.

When people with color blindness apply, for example, Red-Green transform, if they keep the above transformation rule in mind and see color changes, they could guess a normal color. Moreover, Red-Green transform reflects the degree of color saturation into its brightness regularly. So they could know not only the difference between red and green but also the difference between two reds, i.e., the degrees of red.

It lets you play with images to see the effects.
It's available for Windows and Mac OS X, and is free for personal and non-commercial use.

By using Visolve Toolbar, you can apply color filter to the entire screen with just button click without the capture operation. The toolbar will appear by selecting "Visolve" in "Toolbars" in the taskbar context menu.

Moreover, the toolbar appears at the Internet Explorer by selecting "Visolve" in "Toolbars" in the view menu. You can apply color filter to the whole Explorer's window area without the capture operation.

Answer 2

Vision does this. It's software for real-time screen daltonization.

You can also customize the correction strength.

To calculate the values you need to use you can do this color blindness test.

Answer 3

Windows already has native capability to do that since Windows 10 Build 16215 where there are some color filters for ease of access which can be toggled by Windows+Ctrl+C

Windows 10 now includes color filters at the system level, including filters designed to make it easier for people with color blindness to differentiate between colors like red and green and to make it easier for people with light sensitivity to create and consume content. You can find these new filtering options under Settings > Ease of Access > Color and High Contrast (previously called High Contrast Settings).

Announcing Windows 10 Insider Preview Build 16215 for PC + Build 15222 for Mobile

The default filter is grayscale, which is why some people complain why suddenly their Windows turns monochrome when they accidentally press the shortcut

And this is how it works on Windows 11