Lubricant composition and lubricating oil composition containing said lubricant composition

A lubricant composition, containing:

• a base oil;
• and
• organic fine particles substantially consisting of the three elements of carbon, hydrogen and oxygen and having a proportion of particles having a particle diameter of 150 nm to 5 μm of 90% or greater,
• wherein a content of the organic fine particles is 0.01 to 50 parts by mass relative to 100 parts by mass of the base oil,
• wherein the organic fine particles comprise a copolymer containing a unit (a) and a unit (b) as constituent units, and wherein a Hansen solubility parameter interaction distance between the base oil and the unit (a) is 5.2 to 6.2 (MPa)1/2, and a Hansen solubility parameter interaction distance between the base oil and the unit (b) is 8.0 to 18.0 (MPa)1/2, and
• wherein a weight average molecular weight of the copolymer is 1,000 to 500,000 and a compositional ratio of molar proportions of the unit (a) and the unit (b) is such that (a):(b) is 10 to 70:30 to 90, provided that the sum of the molar proportions is 100.