How do I create this effect with Illustrator?

[ultrAslan]

Dear members,

I want to create this effect on Illustrator but I don't know how to do it:

http://bit.ly/2pZf0nf

http://bit.ly/2py1tBH

[SJRiegel · Accepted solution]

One way:

Make a solid rectangle of one color

Then make a very thin and a very thick bar of the other color. Place the bars at the top and bottom of the rectangle, and use Object > Blend > Make to create a blend between the bars, then use Blend options to adjust them to suit.

It actually took longer to describe how to make this than it did to make it

[ultrAslan]

Thank you for your answer, Im gonna experiment with it.