How can I pass variable to ansible playbook in the command line?

I'm new to ansible and wonder how to do so as the following didn't work

ansible-playbook -i '10.0.0.1,' yada-yada.yml --tags 'loaddata' django_fixtures="tile_colors"

Where django_fixtures is my variable.

Reading the docs I find the section Passing Variables On The Command Line, that gives this example:

ansible-playbook release.yml --extra-vars "version=1.23.45 other_variable=foo"

Others examples demonstrate how to load from JSON string (≥1.2) or file (≥1.3)

Other answers state how to pass in the command line variables but not how to access them, so if you do:

--extra-vars "version=1.23.45 other_variable=foo"

In your yml file you assign these to scoped ansible variables by doing something like:

vars:
    my_version: "{{ version }}"
    my_other_variable: {{ other_variable }}

An alternative to using command line args is to utilise environmental variables that are already defined within your session, you can reference these within your ansible yml files like this:

vars:
    my_version: "{{ lookup('env', 'version') }}"
    my_other_variable: {{ lookup('env', 'other_variable') }}