Sunoco was a prime sponsor for the Penske Trans-Am cars. I simply searched, "Sunoco Blue" and this was one of the first hits to come up.
"The Sunoco Logo Color Scheme palette has 3 colors which are Yale Blue (#145289), Vivid Yellow (#FFE600) and Alizarin Crimson (#E32E3D). This color combination was created by user Maya. The Hex, RGB and CMYK codes are in the table below. Note: English language names are approximate equivalents of the hexadecimal color codes".
Please don't ask me what a "hexadecimal color code" is- I haven't a clue. Maybe another search- like a cross referenced PPG number? Hope this is some help.