blue, green
碧 centers on a deep, jewel-like blue-green color, often associated with precious stones or clear water. The given meanings 'blue' and 'green' are both natural applications of this rich, blended hue.
碧 combines 珀 (a jewel-like substance) with 石 (stone), suggesting a precious blue-green stone. The exact historical development is uncertain, but the association with gemstones is well established.
The top 珀 looks like a jewel, and the bottom 石 is a stone. Picture a beautiful blue-green gemstone embedded in rock: 碧 is that deep, precious color.
For ヘキ, imagine a hiker discovering a blue-green gemstone on a mountain trail: hiker -> ヘキ, and the stone's color is 碧.
—
blue eyes
deep blue; azure
jasper
blue sea; blue expanse of water
blue sky; azure sky
third of nine traditional astrological signs (corresponding to Jupiter and east)
red and green
the world is a scene of constant changes (as a mulberry field changing into a blue sea)
green mountains
Blue Cliff Record; Biyan Lu (collection of Zen Buddhist koans compiled in China during the Song Dynasty)
blue water; green water
blue eyes and red hair; Westerner
green; emerald
biluochun (green tea var. grown in Jiangsu, China)
bluish cloud
red-haired and blue-eyed (person); a Westerner
blonde hair and blue eyes
yellow jasper; beryl