color of the moon
朠 centers on the visual quality of moonlight: the soft, luminous color of the moon. It is a rare kanji with a narrow, poetic meaning.
朠 combines 月 (moon) with 英, which likely contributes the sound and the idea of brilliance or flower-like beauty, together suggesting the luminous color of the moon.
The moon 月 on the left shines with the brilliance of a flower 英 on the right, giving the soft, beautiful color of moonlight.
For エイ, imagine the moon's color as a pale 'A' (エイ) grade glow, like an 'A' in brightness: A -> エイ.
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