USC gives Cardinal and Gold equal importance in its visual identity.
That balance matters: the yellow supplies energy, while the red provides the visual weight that prevents it from floating.
Cardinal is the natural first partner. Black can support information hierarchy, and a restrained warm white leaves space around the two primary colors.
Consult USC’s identity guidance for branded material.
Browsers can express the official swatch as rgb(255 204 0).
With the final component literally absent, #FFCC00 stays clean and unmistakably yellow.

Tints
#ffcc00
#ffd11a
#ffd633
#ffdb4c
#ffe066
#ffe680
#ffeb99
#fff0b2
#fff5cc
#fffae6
#ffffff
Shades
#ffcc00
#e6b800
#cca300
#b28f00
#997a00
#806600
#665200
#4c3d00
#332900
#1a1400
Triadic
#ffcc00
#ffffff
#ffffff
Monochromatic
#a68500
#d1a700
#ffcc00
#ffd52e
#ffde59
Analogous
#ffffff
#ffcc00
#ffffff
Complementary
#ffcc00
#ffffff