Declension table of kṛṣṇatva

Neuter	Singular	Dual	Plural
Nominative	kṛṣṇatvam	kṛṣṇatve	kṛṣṇatvāni
Vocative	kṛṣṇatva	kṛṣṇatve	kṛṣṇatvāni
Accusative	kṛṣṇatvam	kṛṣṇatve	kṛṣṇatvāni
Instrumental	kṛṣṇatvena	kṛṣṇatvābhyām	kṛṣṇatvaiḥ
Dative	kṛṣṇatvāya	kṛṣṇatvābhyām	kṛṣṇatvebhyaḥ
Ablative	kṛṣṇatvāt	kṛṣṇatvābhyām	kṛṣṇatvebhyaḥ
Genitive	kṛṣṇatvasya	kṛṣṇatvayoḥ	kṛṣṇatvānām
Locative	kṛṣṇatve	kṛṣṇatvayoḥ	kṛṣṇatveṣu

Compound kṛṣṇatva -

Adverb -kṛṣṇatvam -kṛṣṇatvāt