EDIT 02:
Here is the updated main illustration including most of your feedback.
EDIT 01:
Thanks for your great feedback! This is exactly what I needed, it's hard to know some of the details when you're not a biologist.
I will update the design here soon based on most of your suggestions.
I'm Stéphane, a senior product designer at Stack Exchange. First, I wanted to announce that this site is now starting the process of moving out of beta to become a fully-graduated site! Congratulations!
Graduation and Your Site Design
Graduation comes with a few perks. I have already begun work on your site's design, which will give you your own unique theme that reflects your topic and culture. This will help brand your site as unique, even while you share common elements with other sites that show you are part of a bigger Stack Exchange family.
Once the design goes up, you will receive a link in the footer of other sites in the network, along with the ability to migrate content to and from other sites — and the notoriety of a public launch that says,
Congratulations, you finally made it!
Design Concept
For our Biology's site design and branding, we wanted a design that represents biology without being figurative. The main goal is to convey ideas and known shapes in a unique way. We wanted to create a calm and peaceful place like nature.
Color Scheme
Green has always been the color of nature, it symbolizes growth and life in all its forms. The powerful red suggest red blood cells, a light beige balances the color palette.
Logo & Identity
For the logo, as suggested by the community, I was looking for a unique symbol that represents DNA. It might not represent all of biology but it's the most popular symbol though I tried to get as far as possible from the original shape while keeping it recognizable.
Along with the logo, all the illustrations work as a whole to mimic molecules. They grow in a seamless non-geometric pattern to convey an organic feeling.
Here are some examples to illustrate how it can be used elsewhere to strengthen the visual identity.
T-shirt
Stickers
Note book
Overall site design
Home page
Click on the image below to see it in full resolution
Question page
Click on the image below to see it in full resolution
Sample Site Illustrations (404, error & captcha)
We believe the design and branding work very well for this community, it’s unique and capture the right mood. We’d love to hear your feedback, and if there are no major design changes, we’ll launch the new site design and graduate the site from Beta soon.
Congrats for being an awesome community!