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Below is a link for Coblis - Color Blindness Simulator.

Steps:
1- Use an image or save slide as an image
2- Upload the file to Clobis
3- View image in different display modes

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If you are not suffering from a color vision deficiency it is very hard to imagine how it looks like to be colorblind. The Color BLIndness S imulator can close this gap for you. Just play around with it and get a feeling of how it is to have a color vision handicap.

As all the calculations are made on your local machine, no images are uploaded to the server. Therefore you can use images as big as you like, there are no restrictions. Be aware, there are some issues for the "Lens feature" on Edge and Internet Explorer. All others should support everything just fine.

So go ahead, choose an image through the upload functionality or just drag and drop your image in the center of our Color BLIndness S imulator. It is also possible to zoom and move your images around using your mouse - try it out, I hope you like it.

If there are any issues with the Color BLIndness Simulator please send a note through the contact page. Thanks. If this simulator is not correctly working for you, you could still try the old version which can be found at Coblis.v1 - Color Blindness Simulator.

As it is not not so easy to describe color blindness it comes in handy, that some smart people developed manipulation-algorithms to fake any form of color vision deficiency. The algorithms transform any picture into the same picture as seen by red-, green-, blue- or completely colorblind people.
I would like to thank Michael from ColorJack for providing the color blindness matrix, which was used for the first version of the Color BLIndness Simulator. The actual version ist based on the jsColorblindSimulator-Project developed by MaPePeR. He made it possible to use just client resources and added some very cool features like pan&zoom. At the moment the HCIRN Color Blind Simulation function is used, which is freely available for non-commercial use. The Color Blind Simulation function is
copyright (c) 2000-2001 by Matthew Wickline and the
Human-Computer Interaction Resource Network ( http://hcirn.com/ ).
It is used with the permission of Matthew Wickline and HCIRN,
and is freely available for non-commercial use. For commercial use, please
contact the Human-Computer Interaction Resource Network ( http://hcirn.com/ ).

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If you are not suffering from a color vision deficiency it is very hard to imagine how it looks like to be colorblind. The Color BLIndness S imulator can close this gap for you. Just play around with it and get a feeling of how it is to have a color vision handicap.

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The most common is red/green color blindness, where sufferers mix up all colors which have red or green as part of the whole color. Those affected by Protan color blindness are less sensitive to red light, whilst sufferers of Deuteranopia have the same problem with green. For example, a person with Protanopia will confuse blue and purple because they can’t recognize the red element of the color purple. The third type of color deficiency, Tritanopia, is the least common and refers to sufferers who struggle to distinguish blue or yellow light. The image below shows what the rainbow may look like to individuals with each of these forms of color blindness.

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Color blindness affects 8% of males, and 0.5% of females. Common color blindness is the inability to perceive differences between certain colors the most common type of partial color blindness results in difficulties discriminating between red and green hues the second most common type is difficulty discriminating between blue and yellow hues

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Color blindness affects 8% of males, and 0.5% of femalescommon color blindness is the inability to perceive differences between certain colorsthe most common type of partial color blindness results in difficulties discriminating between red and green huesthe second most common type is difficulty discriminating between blue and yellow hues

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colour choice in maps, graphs, visualizations and informational graphics will influence accessibility of the content (Silver, 2016)text type and density will influence accessibility of the contentcontrast issues will influence accessibility of the contentthere are simple design points to keep in mind to make the content colour-accessible and user-friendly for a wider audience (Coady, 2016

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Think: C-A-T (I would insert a picture of a 3-coloured cat here)

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Think: C-A-T (I would insert a picture of a 3-coloured cat here)

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1. Check your colours - use a tool to assess how someone colour blind would see your colour choices.

2. Avoid colour to signal a requirement - use astrisks or something that can be easily interpreted rather than simply colour.

3. Turn up the temperature - use different colour temperatures to differentiate colour choices for those that are colour blind.

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– establish biases and knowledge link (make them feel like they are smart)
- Use of spot the problem testing – to have learners identify the colour blindness issues in presented media. Should we create the media with errors?  But then use as a final assessment/practice a taken example from media available free online? Focusing objectives for the learners while ours are really learning objectives.

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Think about using textures as a way to indicate or highlight important information