וְרָאָ֣ה הַכֹּהֵ֗ן וְהִנֵּ֧ה בְעוֹר־בְּשָׂרָ֛ם בֶּהָרֹ֖ת כֵּה֣וֹת לְבָנֹ֑ת בֹּ֥הַק ה֛וּא פָּרַ֥ח בָּע֖וֹר טָה֥וֹר הֽוּא׃ (ס)
then the priest shall look; and, behold, if the bright spots in the skin of their flesh be of a dull white, it is a tetter, it hath broken out in the skin: he is clean.
Rashi on Leviticus
כהות לבנות DULL WHITE — It means that their whiteness is not intense but a dull white.
Sforno on Leviticus
כהות לבנות, below that which appears like the skin of an egg concerning which the sages taught us (Maimonides Tum’at Tzoraat 1,11
Rashi on Leviticus
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.