Is 矂 suitable for names?

Generally not recommended for names due to its strong association with shame and embarrassment.

How common is this character?

This is a relatively rare character in modern Chinese, mostly found in classical texts or specialized contexts.

While both relate to shame, 矂 specifically refers to the physical manifestation (blushing), while 羞 is more general shame or shyness.

矂Tone 4

sào ｜ 18 strokes ｜ radical:

To be ashamed;

to blush with shame or embarrassment.

To be ashamedto blush with shame or embarrassment.

AshamedBlush with shameFace reddening with shameFeel ashamedShameful expressionEmbarrassed look

This character represents the physical manifestation of shame through facial redness.
In Chinese culture, showing shame through blushing is often seen as a sign of conscience and moral awareness.
The character is relatively rare in modern usage, mostly appearing in classical or literary contexts.