California Code
ARTICLE 8 - Signs
Section 27901.

27901. The display of the name or trademark shall be in letters in sharp contrast to the background and shall be of such size, shape, and color as to be readily legible during daylight hours from a distance of 50 feet.

This section does not prohibit additional displays not inconsistent with this article.

(Enacted by Stats. 1959, Ch. 3.)