The Compendium of Caraka 6.7.173

6.7.173

dāruṇaṃ &cāruṇaṃ śvitraṃ kilāsaṃ nāmabhistribhiḥ/
vijñeyaṃ trividhaṃ &&tacca tridoṣaṃ prāyaśaśca tat//
&`dāraṇaṃ cāraṇaṃ' iti pā-. &&`yaducyate tattrividhaṃ' iti pā-.
doṣe raktāśrite raktaṃ tāmraṃ māṃsasamāśrite/
śvetaṃ medaḥśrite śvitraṃ guru taccottarottaram//

Dāruṇa, cāruṇa, and kilāsa—by these three names
śvitra is known to be of three types, and it is usually due to all three doṣas.
When the doṣa resides in rakta, it is red; in māṃsa, copper-coloured;
in medas, śvitra is white; and it is heavier successively.