Yes... SoCal is Southern California, I lived there and do not miss it.

If you google it you get the name of a tanning business in California....

California is one place where people like to and are able to develop good suntans. SoCal is an abbreviation for Southern California. "SoCal tan" is a new phrase to me, but Google Book searching confirms my guess: it means the kind of deep tan that is typical of, and fashionable in Southern California. I'm guessing that a "SoCal tan" is considered the ideal among people who admire suntans. "She had that whole blond hair, blueeyed, sunkissed SoCal tan thing going for her." That is, she was the idea of Southern California beauty. "his own good looks—glowing dark hair, chiseled jaw, deep SoCal tan—combined with a subversive sense of humor helped him to pull in men and women alike..." He (David Beckham in this case!) has a good-looking suntan. "she was a trampy bimbo with blonde extensions, a horsey face, fake boobs and a SoCal tan..." in this case, the speaker obviously thinks a SoCal tan is excessive!

What context did you find the word in?

Socal isn't a proper word so it can't be translated. SoCal however is an abbrevation for Southern California. So as Peter says, if you search for this term it comes back with the name of a tanning business which surprise surprise, is in Southern California.