I posted the on a previous thread on the main board back when the new PSU mark/logo was released and people went apes#!# over the lighter blue. Most people have been under the impression that the official PSU blue is the dark navy blue that the ath. dept uses. It is not. However PMS 287 | #000099 remains the official Penn State Blue, not the PMS 282 | #003333 that many people think is the PSU blue.
The best that I can tell is that Paterno started switching from the dark royal blue to the dark navy blue sometime in the 1960s and eventually the rest of the teams fel in line. First, the helmet stripe and numbers were navy blue, while the jersey and pant stripe remained the dark royal, See the Ted Kwalick photos from around 1968.
I just love the irony that of all of the PSU coaches throughout history, it appears that Paterno was the one that made the most drastic change to Penn State uniforms by changing the color.
Here's an old Penn State basketball jersey from the 50s-60s that was recently on ebay
Richie Lucas senior year 1959
Glenn Ressler senior year 1964 My mom went to high school with Ressler & I went to his high school jersey retirement ceremony when I was in middle school. He had one of his Penn State Jerseys and one of his Baltimore Colts jerseys. They were the same shade of dark royal blue
It looks like they started switching to dark navy sometime during the late 60s. Check out the Kwalick photo. The Jersey is clearly a Roal Blue while the helmet stripe & number are Navy.
Ted Kwalick senior year 1968
Here's Ted in the Away Whites
It looks like by 1969, both the jerseys & helmet decorations were navy.
Mike Reid senior season 1969
Even though Penn State Athletics use Dark Navy Blue, the official Penn State Blue is still Dark Royal Blue.