
Scrimba
Data Protocol
GoIT LMS
Codelita
CodeCrafters
Codecademy
Divize
The most fun way to learn to code.

Coblis
Ishihara Test
Sim Daltonism
ColorBlind-Test.io
Color Oracle
ColorBlindTest.us
Accessibility Checker Pro
Free color accessibility toolkit with color blindness simulators, WCAG contrast checker, and accessible palette generator for designers and developers.

Which is more popular?
Based on our record, Codédex seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codedex.io | rgblind.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Morocco · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Codédex yet.
RGBlind is a comprehensive, free web-based accessibility platform that helps designers, developers, and educators create inclusive digital experiences for people with color vision deficiencies. With over 300 million people worldwide affected by color blindness, RGBlind provides scientifically...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Codédex yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Codédex and RGBlind.com.
RGBlind.com's answer:
RGBlind.com is a fully browser-based color blindness simulator and testing platform that allows users to instantly preview how images, websites, and designs appear to people with different types of color vision deficiency. It includes advanced features like daltonization (color correction), split-view comparison, grid overlays, and real-time camera input, all processed locally in the browser for privacy.
RGBlind.com's answer:
Unlike generic simulators or apps requiring downloads, RGBlind.com offers a complete, fast, and easy-to-use solution directly in the browser. It provides both adult and child-friendly color vision tests, supports multiple CVD types, and emphasizes accessibility compliance with WCAG, ADA, and Section 508 standards.
RGBlind.com's answer:
RGBlind.com's answer:
RGBlind.com was created to help raise awareness of color vision deficiencies and provide an accessible, accurate tool for designers, educators, and families. The platform aims to make digital content more inclusive by giving creators the ability to test and improve visual accessibility.
RGBlind.com's answer:
RGBlind.com's answer:
Share your experience with using Codédex and RGBlind.com. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I'm a new coder too. What helps me is finding a good place to learn the most basic principles and having 2-5 things I want to do. I started with codedex.io , learning Python and HTML and then took their courses and moved on looking for... Source: over 3 years ago
I think you should focus on HTML, CSS, and JS, starting with HTML. I just started HTML on a website called codedex.io. Pretty cool so far but I feel like I'm getting into a brand new thing haha. Source: over 3 years ago
I've been learning Python on a website called codedex.io for about 6 months. It's been great for me so far. I just started on Classes and Objects. Give them a try, you might like them. Source: over 3 years ago
Tracking RGBlind.com since Sep 2025.
When comparing Codédex and RGBlind.com, you can also consider the following products.

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If you are not suffering from a color vision deficiency it is very hard to imagine how it looks...
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Free online Ishihara color blindness screening test in 13 languages. Instant severity result, downloadable PDF report, and an embeddable widget. No sign-up, no email. Screens for red-green color vision deficiency, not a medical diagnosis.
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Empowering emerging markets with high-quality tech education
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From the perspective of a color blind person, some colors are impossible to distinguish.
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