@rosano If I had to choose between A/B/C maybe I'd choose B because it looks more "readable" (meaning it's easier to see the logo itself). I wonder if any of them would be an issue for people with color blindness or that's just my impression? But actually I prefer the black & white version :). And I like it!
I'm curious, do you have tips or have you written about your logo design process? I'm struggling on making a logo for my new app and looking for inspiration I thought your logos were great.
@noeldemartin interesting you mention colour blindness: i was leaning towards c because my phone is in greyscale and it's the only one where you can perceive the gradient. i kind of prefer the black and white version too but i think its important for me to get more comfortable with the expressiveness of colour, practice…
@rosano Well it's not that I don't like using color per se, I like your logo for Joybox for example, but these ones give me the impression that they don't have enough contrast. Maybe you can check with tools like https://webaim.org/resources/contrastchecker/ or http://www.myndex.com/APCA/
I usually prefer plain colors to gradients, but that's just my opinion. It's difficult to say with these things, so don't take my opinion too seriously :).
@noeldemartin @rosano Using Firefox's accessibility inspector to simulate colour blindness, they all look fine with the different variants of colour blindness.