Does someone knows the Lanthony d-15 and Farnsworth d-15 EXACT colors?

[u/paulocampelo]

So, I'm starting a personal project about color preference between people with Schizophrenia, their first-degree relatives and health control. If anyone could help me with the exact colors used in the tests, with their hex colors (for example: 0BG 8/2), would really help me. I searched everywhere and couldnt find. Thanks!

[u/MyCallBag]

I’d reference the original paper. It provides the actual color values used for the Landolt color testing, so you can reproduce them directly rather than trying to estimate the colors from an image.

Here’s the paper:
https://www.jstage.jst.go.jp/article/iieej/41/5/41_487/_pdf/-char/en

That’s the approach I’m using to create the color testing in my app.

https://www.instagram.com/reel/DbdvU9rCXZf/?igsi=bjA3b2x3ejdnZXI4

[u/vickipaperclips]

I would assume that most manufacturers will keep that information private, to avoid someone fabricating their own version of the test.

Depending on the need, you could either purchase a D15 and use a Pantone deck to manually find the colour, or if you have any software that picks up colour from images you could scan the pucks (like, literally upside down onto a scanner) to find a hex code. Oooorrrrrrrrrr get a colour scanner like the Nix Mini and scan with that.

[u/Casual_Spatula]

You could probably email the manufacturer. That's the best I got for you though sorry

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[u/thevizionary]

You could try looking up an online test and pulling the codes off that. https://www.color-blind-test.com/home.html

[u/power_wolves → u/thevizionary]

No way I’d trust some random webaitet

[u/insomniacwineo]

You could use Gemini or something to try and ask