red
赤 centers on the color red, including its associated qualities like brightness or being vivid. It is the basic term for red in Japanese.
赤 is a pictograph of a person over a fire, originally representing the color of fire or something burning red. The modern form retains the general shape, with 土 (earth) at the bottom and a stylized top.
The top part looks like a person, and the bottom is 土 (earth). Imagine a person standing over a fire pit in the earth, glowing red from the flames.
For セキ, picture a red second hand on a clock ticking: 'seck' -> セキ, and the red hand marks the seconds.
red; crimson; scarlet
red; crimson; scarlet; vermilion
baby; infant
(being in) the red; deficit
bright red; deep red; flushed (of face)
red; red color
baby; infant
infrared rays; infrared radiation
red flag
red wine
Japanese red pine (Pinus densiflora); Japanese umbrella pine; tanyosho pine
baby; infant
red hair; ginger hair
blushing; getting red in the face
Red Cross
equator
red light (traffic)
red flesh (of a fish); red-fleshed fish (e.g. tuna); lean meat
Red Army (Soviet Union, 1918-1946); Workers' and Peasants' Red Army
Little Red Riding Hood