blue (color)

azure; sky-blue

an official report (e.g. governmental)

A leafy vegetable of the species Brassica oleracea, typically having a dense, round head of leaves.

A preliminary version or master model that serves as a plan or template for future development.

referring to manual labor or those who perform it; a blue-collar worker

the dried root of the indigo woad plant (Isatis tinctoria), commonly used in Traditional Chinese Medicine to treat fevers and inflammatory conditions

cyanobacterium (blue-green alga)

Lantian county in Xi'an, Shaanxi

an unexplored, as yet uncontested market (contrasted with red ocean)

a dark shade of blue color

dark blue

Blu-ray (disc format)

jiaogulan (Gynostemma pentaphyllum)

enamelware with patterns defined by wire cells

the Smurfs

the Blue Planet; planet Earth

indigo (dye)

Lantian county in [[西安|西安|Xi1 An1]], Shaanxi

Buddhist temple (loanword from Sanskrit "samgharama")

literally meaning blue dye comes from the indigo plant but is bluer than indigo; figuratively used to describe a student or successor who surpasses their teacher or predecessor

A leaf vegetable with thick stems, dull green leaves, and small white flowers (Brassica oleracea var. alboglabra), also known as Chinese kale.

(usually of the sky) azure; bright blue

the hardships of beginning an undertaking (idiom)

Plain Blue banner or Shuluun Höh khoshuu in Xilingol League, Inner Mongolia

blue topaz or the mineral topaz (aluminum fluorosilicate)

pinkish blue

Lanshan, a county in Yongzhou City, Hunan

a species of plant in the buckwheat family used to produce natural blue dye

blue shift (astronomy)

Isatis tinctoria (woad, a brassica producing blue dye)

a marriage made in heaven

oilseed rape (Brassica napus)

Chinese vivid niltava (Niltava oatesi), a bird species found in China