In color theory, a purple is defined as any non-spectral color between violet and red (excluding violet and red themselves). The spectral colors violet and indigo are not purples according to color theory, but they are purples according to common English usage since they are between red and blue.
Apex Learning was started in 1997 by Microsoft co-founder Paul Allen on the idea that online courses and test prep, which were already succeeding in higher education, could be applied to K-12.
It's free! The Apex Group (www.apexshipping.com) is based in South San Francisco, California and was founded in 1990. Apex has offices throughout Asia, United States, India and Europe. Apex is recognized as the 3rd largest NVOCC in the transpacific trade to the United States.