Burrus Blue is the primary brand color. The dark shade of blue was chosen for its qualities of leadership and gravity; the light blue for its clarity, transparency, and vibrancy.
These colors are not in the official brand guidelines, but are used on the website. It seems that they were chosen because the offer greater contrast and legibility online, and to match the AO Model poster. As seen on this page https://www.burrus.com/online-learning-system/the-anticipatory-organization-model/