sanguine

nouns

a blood-red color
is derived from
is a type of (narrower)
red color or pigment; the chromatic color resembling the hue of blood

adjectives

confidently optimistic and cheerful
is derived from
is derived from
is similar to
expecting the best in this best of all possible worlds
"in an optimistic mood"; "optimistic plans"; "took an optimistic view"
inclined to a healthy reddish color often associated with outdoor life
"a ruddy complexion"; "Santa's rubicund cheeks"; "a fresh and sanguine complexion"