reddish-lavender vs red-lavender

reddish-lavender and red-lavender both are adjectives.

Word	Noun	Adjective	Verb	Adverb
reddish-lavender	No	Yes	No	No
red-lavender	No	Yes	No	No

As adjectives, reddish-lavender and red-lavender are synonyms defined as:

reddish-lavender and red-lavender: of something having a lavender color tinged with red

reddish-lavender (adjective)	red-lavender (adjective)
of something having a lavender color tinged with red	of something having a lavender color tinged with red