Which CI/CD system to choose that satisfies the following requirements?

Question

Continuous Deployment

Hello,
Tell me which CI / CD system (I am currently considering shippable, circleci, codeship, codefresh) to choose, which:

1. supports integration with tools for quality control, test coverage, vulnerability search;
   
2. application deployment in blue / green mode, I would like to do everything through a graphical tool
   
3. allows you to manage multiple environments. For example live, staging, uat, etc.
   

For the current stack, we use Octopus, where you can manage deployments, wait for the end of testing and continue the process of installing the application, switching in the traffic loader, etc. How to implement this for Kubernetes? Scenario. We deployed the application (it is available only for the company), it was tested by testers, if everything is fine, we allow users to access it. How it is better to organize it automatically?
Thank you.