- About
- Set up
- Colour check
- Result
Welcome to LasMind Vision
Free color blind test online See every website in colours that work for you
A quick colour check for red-green colour differences, about 3 minutes. It checks both eyes together (or each eye, if you choose), then can apply a colour blind filter on LasMind and, with the extension, on other sites. A short colour vision screening builds your vision profile. We then tune colours, contrast and spacing on every site you visit.
- About 3 minutes25 quick plates per eye at most
- One eye at a timeEach eye is checked on its own
- PrivateResults never leave this device
- A bank card (optional)
- Good light
- 75 cm from the screen
Starting means you understand this is a screening, not a medical diagnosis. It covers red-green colour differences. Screens are not calibrated like clinical test books.
Before you start
Four quick tips so the plates look the way they are meant to.
- 75 cm away About an arm's length, screen straight ahead at eye level
- Bright daylight or white light Daylight-like light (6000-7000 K), no glare on the screen
- Screen filters off Night Shift, Night Light, True Tone and dimming off; brightness up
- Usual glasses on No tinted or colour-correcting glasses
Match a bank card Optional
For true plate size, hold a bank card on the screen and resize the outline to match.
Match a bank card Optional
For true plate size, hold a bank card on the screen and resize the outline to match.
No card? Leave it as it is.
Eye 1 of 2
Test your left eye
Cover your right eye with your palm. Do not press on it.
- 1–3Tap the number you see.
- 4No number? Tap Nothing.
- No time limit. Go with your first impression.
Got it
Get ready
Left eye
3
Look at the centre of the circle
Plate
Which number do you see?
Left eye done
Halfway there. Now switch: uncover your right eye and cover your left eye.
Paused
You left the screening tab, so this eye starts again with the plates in a new order.
Your result
Result
Left eye
Right eye
Inconclusive results should be checked in person. We recommend a clinical colour vision test, such as the Farnsworth-Munsell D-15 or an anomaloscope, with an eye care professional.
Colour filter turned on
Starts at 70%. Adjust if colours look too strong or too weak.
Switch filter:
Before and after
Updates as you change the filter or strength.
Which looks clearest to you?
Pick the one where the red and green labels are easiest to tell apart. Tap one to apply it, or pick with the keyboard and press Apply.
Your view is on
Screening only, not a diagnosis.
- Pin LasMind Vision: open the puzzle icon in the toolbar and click the pin.
- Change colours, text size, contrast or read aloud any time from the toolbar icon.
- Turn it off for a single site from the same menu.
- Change colours, text size, contrast or read aloud any time from the Accessibility button on every LasMind page.
- To use these settings on every website, add the free LasMind Vision browser extension. It syncs with this site.
What would you like to do next?
Reports are saved to this device only; nothing is uploaded.
A one-page summary you can print or show an eye care professional. Made on this device; nothing is uploaded.
Advanced
Includes every plate, your answers and times, for an eye care professional. Saved to this device only; nothing is uploaded.
After the test, use the colour blind filter, text size and read aloud in LasMind Vision.
FAQ
Questions about this colour vision test
Still stuck? Contact us and we'll help.
Is this color blind test a diagnosis?
No. It is a colour vision screening for red-green differences. Screens are not calibrated like clinical test books. For a diagnosis, see an eye care professional.
Can the colour check look at one eye at a time?
Yes, as an option. By default both eyes are tested together with up to 21 plates; you can choose to test each eye on its own instead. It takes about 3 minutes (about 5 for each eye separately).
Which types of colour blindness does it look for?
It screens for red-green colour blindness and can suggest a protanopia or deuteranopia filter. It does not test for tritanopia. You can still choose a blue colour blindness or greyscale filter by hand in LasMind Vision.
What happens after the test?
You can apply the suggested colour blind filter on LasMind pages. The same settings sync with the LasMind Vision browser extension, which is coming soon to the Chrome Web Store. Results stay on this device.
Is the test private?
Yes. Answers and the result are stored in your browser. Nothing is uploaded, and there is no account. A report is saved only if you download it.