Antonyms of adj yellow-orange

1 sense of yellow-orange

Sense 1
yellow-orange, yellowish-orange -- (of orange tinged with yellow)

INDIRECT (VIA chromatic) -> achromatic, neutral -- (having no hue; "neutral colors like black or white")

Similarity of adj yellow-orange

1 sense of yellow-orange

Sense 1
yellow-orange, yellowish-orange -- (of orange tinged with yellow)
       => chromatic (vs. achromatic) -- (being or having or characterized by hue)