﴿ يَوْمَ تَبْيَضُّ وُجُوهٌۭ وَتَسْوَدُّ وُجُوهٌۭ ۚ فَأَمَّا ٱلَّذِينَ ٱسْوَدَّتْ وُجُوهُهُمْ أَكَفَرْتُم بَعْدَ إِيمَٰنِكُمْ فَذُوقُوا۟ ٱلْعَذَابَ بِمَا كُنتُمْ تَكْفُرُونَ ﴾

“on the Day [of Judgment] when some faces will shine [with happiness] and some faces will be dark [with grief]. And as for those with faces darkened, [they shall be told:] "Did you deny the truth after having attained to faith? Taste, then, this suffering for having denied the truth!"”

Please check ayah 3:109 for complete tafsir.