Leviticus 13:39

כהות לבנות DULL WHITE — It means that their whiteness is not intense but a dull white. בהק A BRIGHTNESS — just like the white which shows itself in the flesh of a ruddy man, who is termed rouge in old French, between his red spots: this is called בהק “brightness” — like a man who is covered with lentil-like spots, when between one lentil-like spot and another the flesh shows bright with a pure brightness.

וְרָאָ֣ה הַכֹּהֵ֗ן וְהִנֵּ֧ה בְעוֹר־בְּשָׂרָ֛ם בֶּהָרֹ֖ת כֵּה֣וֹת לְבָנֹ֑ת בֹּ֥הַק ה֛וּא פָּרַ֥ח בָּע֖וֹר טָה֥וֹר הֽוּא׃ {ס}        

then the priest shall look: and, behold, if there be darkish white spots in the skin of their flesh; it is a tetter breaking out in the skin; he is clean.