49 CFR § 172.438
RADIOACTIVE YELLOW-II label
November 18, 2020
(a) Except for size and color, the RADIOACTIVE YELLOW-II must be as follows:

(b) In addition to complying with §172.407, the background color on the RADIOACTIVE YELLOW-II label must be yellow in the top half and white in the lower half. The printing and symbol must be black, except for the “II” which must be red.
[Amdt. 172-123, 56 FR 66259, Dec. 20, 1991]