Cyanothamnus warangensis is an erect, woody shrub that typically grows to a height of about 2 m (6 ft 7 in).

The flowers are white and are arranged in groups of up between five and twenty-five or more in leaf axils on a peduncle 2–2.5 mm (0.079–0.098 in) long.

[2][3] This species was first formally described in 2003 by Marco F. Duretto who gave it the name Boronia warangensis in the journal Muelleria from a specimen collected in the Warang section of the White Mountains National Park.

[2][4] In a 2013 paper in the journal Taxon, Marco Duretto and others changed the name to Cyanothamnus warangensis on the basis of cladistic analysis.

[2] Cyanothamnus warangensis is confined to the White Mountains National Park where it grows in scrub or woodland in sandstone country.