Color Blindness
Color vision deficiency simulation for accessibility testing and readability checks.
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Information
Make your Unreal Engine projects accessible to everyone! This Color Blindness pack is a collection of material functions and post process effects designed to help you realistically simulate Color Vision Deficiency (CVD) in real-time.
With an estimated 300 million people worldwide experiencing CVD, relying solely on color for crucial gameplay or UI mechanics can leave a significant portion of your audience at a disadvantage. This free asset pack allows you to visualize how players with CVD experience your work, ensuring your designs are clear, inclusive, and accessible from the ground up.
Key Features & Flexibility
While Unreal Engine offers native color blindness support for global previews, this asset pack acts as a powerful complement with more control:
- Target Specific Objects: Apply simulations directly to individual meshes, UI elements, and other assets to test visual cues.
- Localized Effects: Use post process materials to preview deficiencies within specific volumes or contexts, rather than forcing it across the entire viewport.
- Camera Control: Enable previews on a per-player basis. This allows one developer to validate accessibility in real-time without disrupting other testers in multiplayer environments.
- XR & Research Ready: Add Color Blindness to VR, AR, and MR to build immersive training modules, study visual disorders, or create realistic educational simulations.
Included Assets
The simulation models are built on the research of Gustavo M. Machado, and contains:
- 3 core material functions that simulate the most common deficiencies:
- Deuteranopia (Green-weak vision)
- Protanopia (Red-weak vision)
- Tritanopia (Blue-weak vision)
- 6 Post Process Materials for flexible, volumetric, or global application.
- 1 Test Level to instantly preview and experiment with the effects.
Material Parameters
- Enable Deuteranopia:
- Enables the Deuteranopia color blindness visualization.
- Enable Protanopia:
- Enables the Protanopia color blindness visualization.
- Enable Tritanopia:
- Enables the Tritanopia color blindness visualization.
- Severity:
- Controls the intensity of the color blindness.
Dive Deeper
Learn more about our research and innovations in visual accessibility and real-time rendering. We have published in-depth articles exploring how our post process materials assist vision scientists, educators, and clinicians in creating realistic, dynamic simulations of visual disorders.
Included Files
Total Files- 14
Total Size- 419 kB
Post Process Materials- 1
Material Instances- 1
Material Functions- 3
Levels- 1
- Post Process Materials
- 6
Materials- 1
Textures (1K)- 1
All files and assets adhere to Unreal Engine naming conventions (such as, T_Texture, BP_Actor) and are organized in a clear, consistent folder structure.
Compatibility
Supported Engine Versions
Unreal Engine 5.0+
UEFN
Supported Editor Platforms
Windows 
Mac 
Linux
Supported Target Platforms
Windows
Mac
Linux
VR
PlayStation
Xbox
Nintendo Switch
Steam Deck
Android
iOS
Supports current-generation consoles.
Supported Technologies
Nanite
SupportedLumen
SupportedMegaLights
SupportedNiagara
SupportedPath Tracer
SupportedSubstrate
SupportedChaos
SupportedPCG
SupportedReplication
SupportedSupported Rendering Features
Rendering Techniques
Graphics APIs
Upscaling
Performance
Performance Score
A+
(Very Lightweight)
This score shows how much the product impacts your project's performance. A higher score indicates better performance and a smoother overall experience, with A++, A+, and A ratings having little to no impact on FPS (frames per second).
The performance score is based on the product's Frame Impact (Average) value.
Benchmark Configuration:
- Test project: Lyra Sample Game – Expanse level
- Engine Version: Unreal Engine 5.7
- Build type: Packaged Development Build
- Graphics settings: Epic scalability preset (the highest settings in the Lyra Sample Game)
- Rendering settings: DirectX SM6, Unreal TSR, Deferred Rendering
- Screen resolution: Native 4K (no upscaling)
- Performance profiling: Unreal Insights Trace
- Test length: Three 60-second playthroughs
- OS: Windows 11 Pro
We use hardware from 2016, 2019, and 2025 to measure performance. The official performance score is based on 2025 hardware. Older hardware is used to ensure compatibility and reduce the risk of unintended behavior. You can view the hardware details for a complete list of the systems we use.
Possible performance scores:
- A++: Extremely Lightweight
- A+: Very Lightweight
- A: Lightweight
- B: Light
- C: Medium–light
- D: Medium
- E: Medium–heavy
- F: Heavy
For asset packs, the overall score is determined by the average score across all benchmarked assets.
Frame Impact (Average)
0.02828
ms
Frame Impact values are derived from the product's average GPU frame time contribution. Performance metrics were captured and profiled using Unreal Insights Trace.
Frame Time is the total elapsed time to complete and present a frame, including CPU execution, GPU execution, and any synchronization or waiting between them. Frame Time (ms) = 1000 / FPS:
- 120 FPS ≈ 8.33 ms per frame
- 60 FPS ≈ 16.66 ms per frame
- 30 FPS ≈ 33.33 ms per frame
As Frame Time increases, FPS decreases.
At a 120 FPS target (8.33 ms per frame), our products typically impact frame rate by ~0.1 – 2 FPS. These numbers come from a benchmark designed to push our products to their limits. In most cases, you can expect similar or better performance in your own projects, depending on your content and whether you're CPU- or GPU-bound.
By default, Unreal Engine renders below native resolution using TSR, but our benchmark uses 100% Screen Percentage at native 4K to measure worst-case Frame Impact. For more information about the benchmark configuration, see the Performance Score.
For asset packs (multiple assets), a value range (e.g., 0.034 – 0.076 ms) represents the minimum and maximum Frame Impact across the benchmarked assets.
- Implementation Indicates whether the product is implemented using Blueprint / Material nodes, written code C++ / HLSL, or a combination of both.
- Material nodes
- Parameters Number of exposed parameters to allow easy real-time adjustments. A range indicates the minimum and maximum number of parameters across the product.
- 4
- Instruction Count (PS/VS)
Total number of instructions executed by the GPU for the Pixel Shader (PS) and Vertex Shader (VS) across the product. A material that uses static switches can have a range of instructions rather than a fixed value. A range indicates the minimum and maximum number of instructions across the possible material variants.
Default Materials (SM6, in UE 5.7) have a default instruction count of:
Pixel Shader: 179 instructions
Vertex Shader: 148 instructions
Post Process Materials (SM6, in UE 5.7) have a default instruction count of:
Pixel Shader: 84 instructions
Vertex Shader: 148 instructions - 84 – 85 / 148
- Texture Samplers
Number of unique texture samplers used in the materials across the product. A material that uses static switches can have a range of texture samplers rather than a fixed value. A range indicates the minimum and maximum number of texture samplers across the possible material variants.
Scene Textures also contribute to the sampler count. - 1
- Memory Size
Memory used by the benchmarked asset once it's loaded and ready for use. This includes all referenced dependencies (textures, materials, meshes, etc.).
A range indicates the smallest and largest asset sizes included in the benchmark.
Size references for empty assets with no dependencies:
• Material: 43.5 KiB
• Post Process Material: 51.3 KiB
• Blueprint Actor: 4 KiB
Memory size may vary between Unreal Engine versions. A memory size above 15 MiB is common for many assets. - 100.3 KiB
- Disk Size
Storage space used on disk by the benchmarked asset. This includes all referenced dependencies (textures, materials, meshes, etc.).
A range indicates the smallest and largest asset sizes included in the benchmark.
Size references for empty assets with no dependencies:
• Material: 8.3 KiB
• Post Process Material: 9.1 KiB
• Blueprint Actor: 23.3 KiB
Disk size may vary between Unreal Engine versions. A disk size above 30 MiB is common for many assets. Disk size is mostly relevant for mobile projects and can often be ignored for PC or console projects. - 101.4 KiB
- Benchmark hardware System hardware configuration used to determine the performance score and evaluate the impact on average frame time.
- Hardware details
Hover over or click a label to see more technical details.
Changelog
- 1.3 (Current – 2026-03-20)
- Updated the Gumroad product page.
- 1.2.1 (2026-03-02)
- Added UEFN support.
- 1.2 (2026-02-26)
- Improved the post process material code and reduced dependencies.
- 1.1.1 (2026-02-03)
- Updated the product description and clarified parameter descriptions.
- 1.1 (2026-01-16)
- Migrated product to the new website.
- 1.0 (2022-09-16)
- Initial release.
Frequently Asked Questions
Can't find what you're looking for?
We're happy to help! Our goal is to make sure you never get stuck!
Thank you for doing this! My kids have color blindness, and it would be really helpful for me to have this filter! I'll be able to design levels that are better suited for them. They have Protanopia. It makes sense that their favorite color is blue… Thank you!
Nice! I'm badly color blind. I tend to oversaturate everything as a result. My post process volume is like, Really?
Was actually considering making a first person game at one point where you played as an animal, a lot of animals have different forms of colour blindness. So besides the obvious this would also be useful for that. Good work.