I work with Illustrator in CMYK. I made a logo composed of several shapes and text.

I wanted to make a second version with little text inclined I made a copy of the logo and I tilted my first text. Both have the same color code but the logo at the bottom seems a little lighter compared to the from top even if they have the same color code.

What is the reason for this visual differences? And how can I correct it? (I absolutely need CMYK)

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/acHLH.jpg