Achromatopsia
Achromatopsia means seeing no color at all, only light and dark. Here is how common it is, which colors look the same and a simulator set to achromatopsia.
- Cone affected
- No working cones; rods only
- Group
- Complete color blindness
- How common
- About 1 in 30,000 people (MedlinePlus)
- Milder form
- Incomplete achromatopsia
See a photo with achromatopsia
See it as
Tools for color blind eyes
Tap the original photo to pick the color to find.
- reddiagonal stripes
- orangeback stripes
- yellowvertical lines
- greendots
- bluehorizontal lines
- purplegrid
- pinkrings
- brownchecks
JPG, PNG, WebP, AVIF or HEIC. The photo never leaves this device.
Colors that look alike with achromatopsia
- Vivid Yellowish Green and Deep Purplish Pink
- Vivid Green and Vivid Purplish Red
- Vivid Yellow Green and Brilliant Purple
- Deep Yellow Green and Vivid Purple
- Strong Olive Green and Vivid Reddish Purple
- Strong Green and Strong Purplish Red
Each pair is far apart for typical color vision (ΔE 25 or more) but close to identical after simulation (ΔE under 3). Computed from the ISCC-NBS color names.