ま真maっさお青saoまっmaさお青sao
1.
Describes something that is distinctly blue, devoid of any other color, as seen in a clear sky or ocean.
2.
Indicates a state of pallor or extreme paleness, often associated with fear or shock, suggesting a noticeable loss of color from one's face.
Example:
これをきいたとたん、彼は真っ青になった。